rester vs actor

rester and actor both are nouns.

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

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

Other hypernyms of rester include doer, worker.

rester (noun)	actor (noun)
a person who rests	a theatrical performer
	a person who acts and gets things done