rescuer vs actor

rescuer and actor both are nouns.

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

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

Other hypernyms of rescuer include doer, worker.

rescuer (noun)	actor (noun)
someone who saves something from danger or violence	a theatrical performer
a person who rescues you from harm or danger	a person who acts and gets things done