Role Entity

**Semantic type:** Conceptual Entity

**Definition:** A non-hierarchical, named relationship between concepts. They are binary relationships pointing from one concept to another concept. Roles are unidirectional and each role has a Domain and a Range; the role points from one kind, the domain, to another (or same) kind, the range. The specific concept pointed to is considered the Role Value.

**Synonyms:** - Role - Terminology Role