eager beaver vs actor

eager beaver and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
eager beaver	Yes	No	No	No
actor	Yes	No	No	No

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

Other hypernyms of eager beaver include doer, worker.

eager beaver (noun)	actor (noun)
an alert and energetic person	a theatrical performer
	a person who acts and gets things done