In the Ontology tool Protege, they give prominent positioning to the Class Disjoint feature, which was surprising at first. Since learning what it was, I’ve adopted the vocab word. Turns out it’s a basic part of the Ontology Language OWL.

Disjoint

Classes that are disjoint cannot have any common instance

Turtle expression for disjointedness:

[] rdf:type owl:AllDisjointClasses ;
	owl:members ( :Woman :Man ) .

Example disjoints:

  • animalia / plantea
  • internal candidate / external candidate
  • EV / Gas-powered vehicle / Hybrid vehicle

Source

  • observation