taxonomic relationship between a more general element and a more specific element

NOTE 1 The more specific element is fully consistent with the more general element (it has all of its properties, members, and relationships) and may contain additional information.

NOTE 2 In the metamodel, a Generalization is a directed inheritance relationship, uniting a GeneralizableElement with a more general GeneralizableElement in a hierarchy. Generalization is a subtyping relationship; that is, an Instance of the more general GeneralizableElement may be substituted by an Instance of the more specific GeneralizableElement.