proponent vs actor

proponent and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
proponent	Yes	No	No	No
actor	Yes	No	No	No

As nouns, actor is a hypernym of proponent; that is, actor is a word with a broader meaning than proponent:

Other hypernyms of proponent include doer, worker.

proponent (noun)	actor (noun)
a person who pleads for a cause or propounds an idea	a theatrical performer
	a person who acts and gets things done