Generalization

A generalization relationship is a relationship between a more general class or use case and a more specific class or use case. A generalization is shown as a solid-line path from the more specific element to a more general element. The tip of a generalization is a large hollow triangle pointing to the more general element.

You can place a stereotype on any generalization through the Generalization Specification. However, three common stereotypes for generalizations are extends, includes, and generalization.