scientist vs actor

scientist and actor both are nouns.

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

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

Other hypernyms of scientist include doer, worker.

scientist (noun)	actor (noun)
a person with advanced knowledge of one or more sciences	a theatrical performer
	a person who acts and gets things done