Extensional and Referent

Extensional adjective - Defining a word by listing the class of entities to which the word correctly applies.

Referent and extensional are semantically related. In some cases you can use "Referent" instead an adjective "Extensional".

Referent adjective - Having reference.

Extensional and referent are semantically related. Sometimes you can use "Extensional" instead an adjective "Referent".