chooser vs actor

chooser and actor both are nouns.

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

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

Other hypernyms of chooser include doer, worker.

chooser (noun)	actor (noun)
a person who chooses or selects out	a theatrical performer
	a person who acts and gets things done