diff --git a/src/class_diagram/generators/plantuml/class_diagram_generator.h b/src/class_diagram/generators/plantuml/class_diagram_generator.h
index 428a8639..08953289 100644
--- a/src/class_diagram/generators/plantuml/class_diagram_generator.h
+++ b/src/class_diagram/generators/plantuml/class_diagram_generator.h
@@ -18,7 +18,7 @@
 #pragma once
 
 #include "class_diagram/model/class.h"
-#include "class_diagram/model/class_relationship.h"
+#include "common/model/relationship.h"
 #include "class_diagram/model/diagram.h"
 #include "class_diagram/model/enum.h"
 #include "class_diagram/visitor/translation_unit_visitor.h"
@@ -44,8 +44,8 @@ using diagram_config = clanguml::class_diagram::model::diagram;
 using diagram_model = clanguml::class_diagram::model::diagram;
 using clanguml::class_diagram::model::class_;
 using clanguml::class_diagram::model::enum_;
-using clanguml::class_diagram::model::relationship_t;
-using clanguml::class_diagram::model::scope_t;
+using clanguml::common::model::relationship_t;
+using clanguml::common::model::scope_t;
 using namespace clanguml::util;
 
 std::string relative_to(std::string n, std::string c);
diff --git a/src/class_diagram/model/class.h b/src/class_diagram/model/class.h
index 7f3622b2..e84fba7d 100644
--- a/src/class_diagram/model/class.h
+++ b/src/class_diagram/model/class.h
@@ -21,9 +21,9 @@
 #include "class_method.h"
 #include "class_parent.h"
 #include "class_template.h"
-#include "element.h"
-#include "enums.h"
-#include "stylable_element.h"
+#include "common/model/element.h"
+#include "common/model/enums.h"
+#include "common/model/stylable_element.h"
 #include "type_alias.h"
 
 #include <string>
@@ -31,7 +31,8 @@
 
 namespace clanguml::class_diagram::model {
 
-class class_ : public element, public stylable_element {
+class class_ : public common::model::element,
+               public common::model::stylable_element {
 public:
     class_(const std::vector<std::string> &using_namespaces);
 
diff --git a/src/class_diagram/model/class_element.cc b/src/class_diagram/model/class_element.cc
index ae105d28..de30ae5f 100644
--- a/src/class_diagram/model/class_element.cc
+++ b/src/class_diagram/model/class_element.cc
@@ -20,15 +20,15 @@
 
 namespace clanguml::class_diagram::model {
 
-class_element::class_element(
-    scope_t scope, const std::string &name, const std::string &type)
+class_element::class_element(common::model::scope_t scope,
+    const std::string &name, const std::string &type)
     : scope_{scope}
     , name_{name}
     , type_{type}
 {
 }
 
-scope_t class_element::scope() const { return scope_; }
+common::model::scope_t class_element::scope() const { return scope_; }
 
 std::string class_element::name() const { return name_; }
 
diff --git a/src/class_diagram/model/class_element.h b/src/class_diagram/model/class_element.h
index 285c6d1f..a53fdeab 100644
--- a/src/class_diagram/model/class_element.h
+++ b/src/class_diagram/model/class_element.h
@@ -17,23 +17,23 @@
  */
 #pragma once
 
-#include "decorated_element.h"
+#include "common/model/decorated_element.h"
 
 #include <string>
 
 namespace clanguml::class_diagram::model {
 
-class class_element : public decorated_element {
+class class_element : public common::model::decorated_element {
 public:
-    class_element(
-        scope_t scope, const std::string &name, const std::string &type);
+    class_element(common::model::scope_t scope, const std::string &name,
+        const std::string &type);
 
-    scope_t scope() const;
+    common::model::scope_t scope() const;
     std::string name() const;
     std::string type() const;
 
 private:
-    scope_t scope_;
+    common::model::scope_t scope_;
     std::string name_;
     std::string type_;
 };
diff --git a/src/class_diagram/model/class_member.cc b/src/class_diagram/model/class_member.cc
index e61c9085..360f76b0 100644
--- a/src/class_diagram/model/class_member.cc
+++ b/src/class_diagram/model/class_member.cc
@@ -20,8 +20,8 @@
 
 namespace clanguml::class_diagram::model {
 
-class_member::class_member(
-    scope_t scope, const std::string &name, const std::string &type)
+class_member::class_member(common::model::scope_t scope,
+    const std::string &name, const std::string &type)
     : class_element{scope, name, type}
 {
 }
diff --git a/src/class_diagram/model/class_member.h b/src/class_diagram/model/class_member.h
index 83dc78e3..f339d4cb 100644
--- a/src/class_diagram/model/class_member.h
+++ b/src/class_diagram/model/class_member.h
@@ -25,8 +25,8 @@ namespace clanguml::class_diagram::model {
 
 class class_member : public class_element {
 public:
-    class_member(
-        scope_t scope, const std::string &name, const std::string &type);
+    class_member(common::model::scope_t scope, const std::string &name,
+        const std::string &type);
 
     bool is_relationship() const;
     void is_relationship(bool is_relationship);
diff --git a/src/class_diagram/model/class_method.cc b/src/class_diagram/model/class_method.cc
index 43b2c336..38f44bfe 100644
--- a/src/class_diagram/model/class_method.cc
+++ b/src/class_diagram/model/class_method.cc
@@ -20,8 +20,8 @@
 
 namespace clanguml::class_diagram::model {
 
-class_method::class_method(
-    scope_t scope, const std::string &name, const std::string &type)
+class_method::class_method(common::model::scope_t scope,
+    const std::string &name, const std::string &type)
     : class_element{scope, name, type}
 {
 }
diff --git a/src/class_diagram/model/class_method.h b/src/class_diagram/model/class_method.h
index 713567a3..024fbac7 100644
--- a/src/class_diagram/model/class_method.h
+++ b/src/class_diagram/model/class_method.h
@@ -27,8 +27,8 @@ namespace clanguml::class_diagram::model {
 
 class class_method : public class_element {
 public:
-    class_method(
-        scope_t scope, const std::string &name, const std::string &type);
+    class_method(common::model::scope_t scope, const std::string &name,
+        const std::string &type);
 
     bool is_pure_virtual() const;
     void is_pure_virtual(bool is_pure_virtual);
diff --git a/src/class_diagram/model/class_parent.cc b/src/class_diagram/model/class_parent.cc
index 97dd8ced..83669fef 100644
--- a/src/class_diagram/model/class_parent.cc
+++ b/src/class_diagram/model/class_parent.cc
@@ -28,8 +28,11 @@ void class_parent::is_virtual(bool is_virtual) { is_virtual_ = is_virtual; }
 
 bool class_parent::is_virtual() const { return is_virtual_; }
 
-void class_parent::set_access(access_t access) { access_ = access; }
+void class_parent::set_access(common::model::access_t access)
+{
+    access_ = access;
+}
 
-access_t class_parent::access() const { return access_; }
+common::model::access_t class_parent::access() const { return access_; }
 
 }
diff --git a/src/class_diagram/model/class_parent.h b/src/class_diagram/model/class_parent.h
index 002abbc3..f51953d2 100644
--- a/src/class_diagram/model/class_parent.h
+++ b/src/class_diagram/model/class_parent.h
@@ -17,7 +17,7 @@
  */
 #pragma once
 
-#include "enums.h"
+#include "common/model/enums.h"
 
 #include <string>
 
@@ -31,12 +31,12 @@ public:
     void is_virtual(bool is_virtual);
     bool is_virtual() const;
 
-    void set_access(access_t access);
-    access_t access() const;
+    void set_access(common::model::access_t access);
+    common::model::access_t access() const;
 
 private:
     std::string name_;
     bool is_virtual_{false};
-    access_t access_;
+    common::model::access_t access_;
 };
 }
diff --git a/src/class_diagram/model/enum.h b/src/class_diagram/model/enum.h
index 1aaa2886..cd2070fa 100644
--- a/src/class_diagram/model/enum.h
+++ b/src/class_diagram/model/enum.h
@@ -24,7 +24,8 @@
 
 namespace clanguml::class_diagram::model {
 
-class enum_ : public element, public stylable_element {
+class enum_ : public common::model::element,
+              public common::model::stylable_element {
 public:
     enum_(const std::vector<std::string> &using_namespaces);
 
diff --git a/src/class_diagram/model/method_parameter.h b/src/class_diagram/model/method_parameter.h
index cd5bc469..5eceadb6 100644
--- a/src/class_diagram/model/method_parameter.h
+++ b/src/class_diagram/model/method_parameter.h
@@ -17,14 +17,14 @@
  */
 #pragma once
 
-#include "decorated_element.h"
+#include "common/model/decorated_element.h"
 
 #include <string>
 #include <vector>
 
 namespace clanguml::class_diagram::model {
 
-class method_parameter : public decorated_element {
+class method_parameter : public common::model::decorated_element {
 public:
     void set_type(const std::string &type);
     std::string type() const;
diff --git a/src/class_diagram/visitor/translation_unit_visitor.cc b/src/class_diagram/visitor/translation_unit_visitor.cc
index 11234c3d..e2185ca6 100644
--- a/src/class_diagram/visitor/translation_unit_visitor.cc
+++ b/src/class_diagram/visitor/translation_unit_visitor.cc
@@ -36,19 +36,20 @@
 
 namespace clanguml::class_diagram::visitor {
 
-using clanguml::class_diagram::model::access_t;
+using clanguml::common::model::access_t;
 using clanguml::class_diagram::model::class_;
 using clanguml::class_diagram::model::class_member;
 using clanguml::class_diagram::model::class_method;
 using clanguml::class_diagram::model::class_parent;
-using clanguml::class_diagram::model::class_relationship;
+using clanguml::class_diagram::model::class_template;
 using clanguml::class_diagram::model::class_template;
 using clanguml::class_diagram::model::diagram;
 using clanguml::class_diagram::model::enum_;
 using clanguml::class_diagram::model::method_parameter;
-using clanguml::class_diagram::model::relationship_t;
-using clanguml::class_diagram::model::scope_t;
+using clanguml::common::model::relationship_t;
+using clanguml::common::model::scope_t;
 using clanguml::class_diagram::model::type_alias;
+using clanguml::common::model::relationship;
 
 namespace detail {
 scope_t cpp_access_specifier_to_scope(
@@ -551,12 +552,12 @@ bool translation_unit_visitor::process_field_with_template_instantiation(
     else
         relationship_type = relationship_t::kAggregation;
 
-    class_relationship rr{relationship_type, tinst.full_name(),
+    relationship rr{relationship_type, tinst.full_name(),
         detail::cpp_access_specifier_to_scope(as), mv.name()};
     rr.set_style(m.style_spec());
 
     // Process field decorators
-    auto [decorator_rtype, decorator_rmult] = m.relationship();
+    auto [decorator_rtype, decorator_rmult] = m.get_relationship();
     if (decorator_rtype != relationship_t::kNone) {
         rr.set_type(decorator_rtype);
         auto mult = util::split(decorator_rmult, ":");
@@ -569,7 +570,7 @@ bool translation_unit_visitor::process_field_with_template_instantiation(
     if (ctx.config().should_include(tinst.name())) {
         LOG_DBG("Adding field instantiation relationship {} {} {} : {}",
             rr.destination(),
-            clanguml::class_diagram::model::to_string(rr.type()), c.full_name(),
+            clanguml::common::model::to_string(rr.type()), c.full_name(),
             rr.label());
 
         c.add_relationship(std::move(rr));
@@ -632,11 +633,11 @@ void translation_unit_visitor::process_field(
 
         for (const auto &[type, relationship_type] : relationships) {
             if (relationship_type != relationship_t::kNone) {
-                class_relationship r{
+                relationship r{
                     relationship_type, type, m.scope(), m.name()};
                 r.set_style(m.style_spec());
 
-                auto [decorator_rtype, decorator_rmult] = m.relationship();
+                auto [decorator_rtype, decorator_rmult] = m.get_relationship();
                 if (decorator_rtype != relationship_t::kNone) {
                     r.set_type(decorator_rtype);
                     auto mult = util::split(decorator_rmult, ":");
@@ -648,7 +649,7 @@ void translation_unit_visitor::process_field(
 
                 LOG_DBG("Adding field relationship {} {} {} : {}",
                     r.destination(),
-                    clanguml::class_diagram::model::to_string(r.type()),
+                    clanguml::common::model::to_string(r.type()),
                     c.full_name(), r.label());
 
                 c.add_relationship(std::move(r));
@@ -874,11 +875,11 @@ void translation_unit_visitor::process_function_parameter(
         for (const auto &[type, relationship_type] : relationships) {
             if ((relationship_type != relationship_t::kNone) &&
                 (type != c.name())) {
-                class_relationship r{relationship_t::kDependency, type};
+                relationship r{relationship_t::kDependency, type};
 
                 LOG_DBG("Adding field relationship {} {} {} : {}",
                     r.destination(),
-                    clanguml::class_diagram::model::to_string(r.type()),
+                    clanguml::common::model::to_string(r.type()),
                     c.full_name(), r.label());
 
                 c.add_relationship(std::move(r));
@@ -940,14 +941,14 @@ void translation_unit_visitor::process_function_parameter(
                                 "only adding reference to template {}",
                             cx::util::full_name(cppast::remove_cv(t),
                                 ctx.entity_index(), false));
-                        class_relationship rr{relationship_t::kDependency,
+                        relationship rr{relationship_t::kDependency,
                             cx::util::full_name(cppast::remove_cv(t),
                                 ctx.entity_index(), false)};
                         LOG_DBG("Adding field template dependency relationship "
                                 "{} {} {} "
                                 ": {}",
                             rr.destination(),
-                            clanguml::class_diagram::model::to_string(
+                            clanguml::common::model::to_string(
                                 rr.type()),
                             c.full_name(), rr.label());
                         c.add_relationship(std::move(rr));
@@ -957,13 +958,13 @@ void translation_unit_visitor::process_function_parameter(
                         class_ tinst = build_template_instantiation(
                             template_instantiation_type);
 
-                        class_relationship rr{
+                        relationship rr{
                             relationship_t::kDependency, tinst.full_name()};
 
                         LOG_DBG("Adding field dependency relationship {} {} {} "
                                 ": {}",
                             rr.destination(),
-                            clanguml::class_diagram::model::to_string(
+                            clanguml::common::model::to_string(
                                 rr.type()),
                             c.full_name(), rr.label());
 
@@ -1008,7 +1009,7 @@ void translation_unit_visitor::process_friend(
                 cppast::cpp_entity_kind::class_template_t))
         return;
 
-    class_relationship r{
+    relationship r{
         relationship_t::kFriendship, "", scope_t::kNone, "<<friend>>"};
 
     if (f.comment().has_value())
@@ -1355,7 +1356,7 @@ class_ translation_unit_visitor::build_template_instantiation(
                                 ? std::make_optional(&tinst)
                                 : parent);
 
-                    class_relationship tinst_dependency{
+                    relationship tinst_dependency{
                         relationship_t::kDependency, nested_tinst.full_name()};
 
                     auto nested_tinst_full_name = nested_tinst.full_name();
@@ -1392,7 +1393,7 @@ class_ translation_unit_visitor::build_template_instantiation(
                 }
                 else if (targ.type().value().kind() ==
                     cppast::cpp_type_kind::user_defined_t) {
-                    class_relationship tinst_dependency{
+                    relationship tinst_dependency{
                         relationship_t::kDependency,
                         cx::util::full_name(
                             cppast::remove_cv(
@@ -1478,7 +1479,7 @@ class_ translation_unit_visitor::build_template_instantiation(
         // Otherwise point to the base template
         destination = tinst.base_template();
     }
-    class_relationship r{relationship_t::kInstantiation, destination};
+    relationship r{relationship_t::kInstantiation, destination};
     tinst.add_relationship(std::move(r));
 
     return tinst;
diff --git a/src/class_diagram/visitor/translation_unit_visitor.h b/src/class_diagram/visitor/translation_unit_visitor.h
index d4cf2e46..508866f8 100644
--- a/src/class_diagram/visitor/translation_unit_visitor.h
+++ b/src/class_diagram/visitor/translation_unit_visitor.h
@@ -100,9 +100,9 @@ public:
 
     bool find_relationships(const cppast::cpp_type &t,
         std::vector<std::pair<std::string,
-            clanguml::class_diagram::model::relationship_t>> &relationships,
-        clanguml::class_diagram::model::relationship_t relationship_hint =
-            clanguml::class_diagram::model::relationship_t::kNone);
+            clanguml::common::model::relationship_t>> &relationships,
+        clanguml::common::model::relationship_t relationship_hint =
+            clanguml::common::model::relationship_t::kNone);
 
     void process_template_type_parameter(
         const cppast::cpp_template_type_parameter &t,
diff --git a/src/class_diagram/model/decorated_element.cc b/src/common/model/decorated_element.cc
similarity index 95%
rename from src/class_diagram/model/decorated_element.cc
rename to src/common/model/decorated_element.cc
index ab4f1717..8feeab75 100644
--- a/src/class_diagram/model/decorated_element.cc
+++ b/src/common/model/decorated_element.cc
@@ -18,7 +18,7 @@
 
 #include "decorated_element.h"
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 bool decorated_element::skip() const
 {
@@ -38,7 +38,7 @@ bool decorated_element::skip_relationship() const
     return false;
 }
 
-std::pair<relationship_t, std::string> decorated_element::relationship() const
+std::pair<relationship_t, std::string> decorated_element::get_relationship() const
 {
     for (auto &d : decorators_)
         if (std::dynamic_pointer_cast<decorators::association>(d))
diff --git a/src/class_diagram/model/decorated_element.h b/src/common/model/decorated_element.h
similarity index 91%
rename from src/class_diagram/model/decorated_element.h
rename to src/common/model/decorated_element.h
index f93c0eae..4ac1293f 100644
--- a/src/class_diagram/model/decorated_element.h
+++ b/src/common/model/decorated_element.h
@@ -25,7 +25,7 @@
 #include <string>
 #include <vector>
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 class decorated_element {
 public:
@@ -33,7 +33,7 @@ public:
 
     bool skip_relationship() const;
 
-    std::pair<relationship_t, std::string> relationship() const;
+    std::pair<relationship_t, std::string> get_relationship() const;
 
     std::string style_spec();
 
diff --git a/src/class_diagram/model/element.cc b/src/common/model/element.cc
similarity index 87%
rename from src/class_diagram/model/element.cc
rename to src/common/model/element.cc
index f4af9265..cc82a07c 100644
--- a/src/class_diagram/model/element.cc
+++ b/src/common/model/element.cc
@@ -20,7 +20,7 @@
 
 #include "util/util.h"
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 std::atomic_uint64_t element::m_nextId = 1;
 
@@ -32,7 +32,7 @@ element::element(const std::vector<std::string> &using_namespaces)
 
 std::string element::alias() const { return fmt::format("C_{:010}", m_id); }
 
-void element::add_relationship(class_relationship &&cr)
+void element::add_relationship(relationship &&cr)
 {
     if (cr.destination().empty()) {
         LOG_WARN("Skipping relationship '{}' - {} - '{}' due empty "
@@ -56,12 +56,12 @@ const std::vector<std::string> &element::using_namespaces() const
     return using_namespaces_;
 }
 
-std::vector<class_relationship> &element::relationships()
+std::vector<relationship> &element::relationships()
 {
     return relationships_;
 }
 
-const std::vector<class_relationship> &element::relationships() const
+const std::vector<relationship> &element::relationships() const
 {
     return relationships_;
 }
diff --git a/src/class_diagram/model/element.h b/src/common/model/element.h
similarity index 84%
rename from src/class_diagram/model/element.h
rename to src/common/model/element.h
index d533ead8..d32af47e 100644
--- a/src/class_diagram/model/element.h
+++ b/src/common/model/element.h
@@ -17,14 +17,15 @@
  */
 #pragma once
 
-#include "class_relationship.h"
+#include "relationship.h"
 #include "decorated_element.h"
+#include "relationship.h"
 
 #include <atomic>
 #include <string>
 #include <vector>
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 class element : public decorated_element {
 public:
@@ -46,11 +47,11 @@ public:
 
     const std::vector<std::string> &using_namespaces() const;
 
-    std::vector<class_relationship> &relationships();
+    std::vector<relationship> &relationships();
 
-    const std::vector<class_relationship> &relationships() const;
+    const std::vector<relationship> &relationships() const;
 
-    void add_relationship(class_relationship &&cr);
+    void add_relationship(relationship &&cr);
 
 protected:
     const uint64_t m_id{0};
@@ -59,7 +60,7 @@ private:
     std::string name_;
     std::vector<std::string> namespace_;
     std::vector<std::string> using_namespaces_;
-    std::vector<class_relationship> relationships_;
+    std::vector<relationship> relationships_;
 
     static std::atomic_uint64_t m_nextId;
 };
diff --git a/src/class_diagram/model/enums.h b/src/common/model/enums.h
similarity index 95%
rename from src/class_diagram/model/enums.h
rename to src/common/model/enums.h
index 83cc8737..08c78d45 100644
--- a/src/class_diagram/model/enums.h
+++ b/src/common/model/enums.h
@@ -17,7 +17,7 @@
  */
 #pragma once
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 enum class access_t { kPublic, kProtected, kPrivate };
 
diff --git a/src/class_diagram/model/class_relationship.cc b/src/common/model/relationship.cc
similarity index 67%
rename from src/class_diagram/model/class_relationship.cc
rename to src/common/model/relationship.cc
index c79747d2..134bf372 100644
--- a/src/class_diagram/model/class_relationship.cc
+++ b/src/common/model/relationship.cc
@@ -1,5 +1,5 @@
 /**
- * src/class_diagram/model/class_relationship.cc
+ * src/common/model/class_relationship.cc
  *
  * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
  *
@@ -16,9 +16,9 @@
  * limitations under the License.
  */
 
-#include "class_relationship.h"
+#include "relationship.h"
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 std::string to_string(relationship_t r)
 {
@@ -48,7 +48,7 @@ std::string to_string(relationship_t r)
     }
 }
 
-class_relationship::class_relationship(relationship_t type,
+relationship::relationship(relationship_t type,
     const std::string &destination, scope_t scope, const std::string &label,
     const std::string &multiplicity_source,
     const std::string &multiplicity_destination)
@@ -61,51 +61,51 @@ class_relationship::class_relationship(relationship_t type,
 {
 }
 
-void class_relationship::set_type(relationship_t type) noexcept
+void relationship::set_type(relationship_t type) noexcept
 {
     type_ = type;
 }
 
-relationship_t class_relationship::type() const noexcept { return type_; }
+relationship_t relationship::type() const noexcept { return type_; }
 
-void class_relationship::set_destination(const std::string &destination)
+void relationship::set_destination(const std::string &destination)
 {
     destination_ = destination;
 }
 
-std::string class_relationship::destination() const { return destination_; }
+std::string relationship::destination() const { return destination_; }
 
-void class_relationship::set_multiplicity_source(
+void relationship::set_multiplicity_source(
     const std::string &multiplicity_source)
 {
     multiplicity_source_ = multiplicity_source;
 }
 
-std::string class_relationship::multiplicity_source() const
+std::string relationship::multiplicity_source() const
 {
     return multiplicity_source_;
 }
 
-void class_relationship::set_multiplicity_destination(
+void relationship::set_multiplicity_destination(
     const std::string &multiplicity_destination)
 {
     multiplicity_destination_ = multiplicity_destination;
 }
 
-std::string class_relationship::multiplicity_destination() const
+std::string relationship::multiplicity_destination() const
 {
     return multiplicity_destination_;
 }
 
-void class_relationship::set_label(const std::string &label) { label_ = label; }
+void relationship::set_label(const std::string &label) { label_ = label; }
 
-std::string class_relationship::label() const { return label_; }
+std::string relationship::label() const { return label_; }
 
-void class_relationship::set_scope(scope_t scope) noexcept { scope_ = scope; }
+void relationship::set_scope(scope_t scope) noexcept { scope_ = scope; }
 
-scope_t class_relationship::scope() const noexcept { return scope_; }
+scope_t relationship::scope() const noexcept { return scope_; }
 
-bool operator==(const class_relationship &l, const class_relationship &r)
+bool operator==(const relationship &l, const relationship &r)
 {
     return l.type() == r.type() && l.destination() == r.destination() &&
         l.label() == r.label();
diff --git a/src/class_diagram/model/class_relationship.h b/src/common/model/relationship.h
similarity index 79%
rename from src/class_diagram/model/class_relationship.h
rename to src/common/model/relationship.h
index 2ffdde7a..9e2e47c5 100644
--- a/src/class_diagram/model/class_relationship.h
+++ b/src/common/model/relationship.h
@@ -1,5 +1,5 @@
 /**
- * src/class_diagram/model/class_relationship.h
+ * src/common/model/relationship.h
  *
  * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
  *
@@ -17,23 +17,24 @@
  */
 #pragma once
 
-#include "decorated_element.h"
-#include "stylable_element.h"
+#include "common/model/decorated_element.h"
+#include "common/model/stylable_element.h"
 
 #include <string>
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 std::string to_string(relationship_t r);
 
-class class_relationship : public decorated_element, public stylable_element {
+class relationship : public common::model::decorated_element,
+                           public common::model::stylable_element {
 public:
-    class_relationship(relationship_t type, const std::string &destination,
+    relationship(relationship_t type, const std::string &destination,
         scope_t scope = scope_t::kNone, const std::string &label = "",
         const std::string &multiplicity_source = "",
         const std::string &multiplicity_destination = "");
 
-    virtual ~class_relationship() = default;
+    virtual ~relationship() = default;
 
     void set_type(relationship_t type) noexcept;
     relationship_t type() const noexcept;
@@ -55,7 +56,7 @@ public:
     scope_t scope() const noexcept;
 
     friend bool operator==(
-        const class_relationship &l, const class_relationship &r);
+        const relationship &l, const relationship &r);
 
 private:
     relationship_t type_{relationship_t::kAssociation};
diff --git a/src/class_diagram/model/stylable_element.cc b/src/common/model/stylable_element.cc
similarity index 95%
rename from src/class_diagram/model/stylable_element.cc
rename to src/common/model/stylable_element.cc
index 47b0115c..e1919fb7 100644
--- a/src/class_diagram/model/stylable_element.cc
+++ b/src/common/model/stylable_element.cc
@@ -18,7 +18,7 @@
 
 #include "stylable_element.h"
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 void stylable_element::set_style(const std::string &style) { style_ = style; }
 
diff --git a/src/class_diagram/model/stylable_element.h b/src/common/model/stylable_element.h
similarity index 95%
rename from src/class_diagram/model/stylable_element.h
rename to src/common/model/stylable_element.h
index cfc1423d..ab0059ae 100644
--- a/src/class_diagram/model/stylable_element.h
+++ b/src/common/model/stylable_element.h
@@ -19,7 +19,7 @@
 
 #include <string>
 
-namespace clanguml::class_diagram::model {
+namespace clanguml::common::model {
 
 class stylable_element {
 public:
diff --git a/src/config/config.cc b/src/config/config.cc
index 054bbd42..8edb024d 100644
--- a/src/config/config.cc
+++ b/src/config/config.cc
@@ -90,7 +90,7 @@ bool diagram::should_include(const std::string &name_) const
 }
 
 bool diagram::should_include(
-    const clanguml::class_diagram::model::scope_t scope) const
+    const clanguml::common::model::scope_t scope) const
 {
     for (const auto &s : exclude.scopes) {
         if (s == scope)
@@ -128,7 +128,7 @@ bool class_diagram::has_class(std::string clazz)
 }
 
 namespace YAML {
-using clanguml::class_diagram::model::scope_t;
+using clanguml::common::model::scope_t;
 using clanguml::config::class_diagram;
 using clanguml::config::config;
 using clanguml::config::filter;
diff --git a/src/config/config.h b/src/config/config.h
index e0e4ae2c..6f5e04ad 100644
--- a/src/config/config.h
+++ b/src/config/config.h
@@ -18,7 +18,7 @@
 #pragma once
 
 #include "class_diagram/model/diagram.h"
-#include "class_diagram/model/enums.h"
+#include "common/model/enums.h"
 #include "util/util.h"
 
 #include <spdlog/spdlog.h>
@@ -56,7 +56,7 @@ struct filter {
     // E.g.:
     //   - public
     //   - private
-    std::vector<class_diagram::model::scope_t> scopes;
+    std::vector<common::model::scope_t> scopes;
 };
 
 struct diagram {
@@ -77,7 +77,7 @@ struct diagram {
 
     bool should_include(const std::string &name_) const;
 
-    bool should_include(const class_diagram::model::scope_t scope) const;
+    bool should_include(const common::model::scope_t scope) const;
 };
 
 struct source_location {
diff --git a/src/main.cc b/src/main.cc
index ba10b49d..247adbf4 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -19,28 +19,19 @@
 #define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_DEBUG
 
 #include "class_diagram/generators/plantuml/class_diagram_generator.h"
-#include "class_diagram/model/diagram.h"
-#include "class_diagram/visitor/translation_unit_visitor.h"
 #include "config/config.h"
 #include "cx/compilation_database.h"
 #include "sequence_diagram/generators/plantuml/sequence_diagram_generator.h"
-#include "sequence_diagram/visitor/translation_unit_context.h"
 #include "util/util.h"
 
 #include <cli11/CLI11.hpp>
 #include <cppast/libclang_parser.hpp>
-#include <glob/glob.hpp>
 #include <spdlog/spdlog.h>
 
 #include <filesystem>
 #include <fstream>
 #include <iostream>
-#include <limits.h>
-#include <malloc.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 
 using namespace clanguml;
 using config::config;
@@ -112,7 +103,6 @@ int main(int argc, const char *argv[])
                 dynamic_cast<clanguml::config::sequence_diagram &>(*diagram),
                 model);
         }
-
         ofs.close();
     }