greeter vs actor

greeter and actor both are nouns.

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

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

Other hypernyms of greeter include doer, worker.

greeter (noun)	actor (noun)
a person who greets	a theatrical performer
	a person who acts and gets things done