V.P. vs executive director

V.P. and executive director both are nouns.

Word	Noun	Adjective	Verb	Adverb
V.P.	Yes	No	No	No
executive director	Yes	No	No	No

As nouns, executive director is a hypernym of V.P.; that is, executive director is a word with a broader meaning than V.P.:

V.P.: an executive officer ranking immediately below a president; may serve in the president's place under certain circumstances
executive director: a person responsible for the administration of a business

Other hypernyms of V.P. include executive.

V.P. (noun)	executive director (noun)
an executive officer ranking immediately below a president; may serve in the president's place under certain circumstances	a person responsible for the administration of a business