stifler vs actor

stifler and actor both are nouns.

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

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

Other hypernyms of stifler include doer, worker.

stifler (noun)	actor (noun)
a person who stifles or smothers or suppresses	a theatrical performer
	a person who acts and gets things done