muscle-builder vs actor

muscle-builder and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
muscle-builder	Yes	No	No	No
actor	Yes	No	No	No

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

muscle-builder: someone who does special exercises to develop a brawny musculature
actor: a person who acts and gets things done

Other hypernyms of muscle-builder include doer, worker.

muscle-builder (noun)	actor (noun)
someone who does special exercises to develop a brawny musculature	a theatrical performer
	a person who acts and gets things done