baby buster vs actor

baby buster and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
baby buster	Yes	No	No	No
actor	Yes	No	No	No

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

baby buster: a person born in the generation following the baby boom when the birth rate fell dramatically
actor: a person who acts and gets things done

Other hypernyms of baby buster include doer, worker.

baby buster (noun)	actor (noun)
a person born in the generation following the baby boom when the birth rate fell dramatically	a theatrical performer
	a person who acts and gets things done