romper vs actor

romper and actor both are nouns.

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

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

Other hypernyms of romper include doer, worker.

romper (noun)	actor (noun)
a one-piece garment for children to wear at play; the lower part is shaped like bloomers	a theatrical performer
a person who romps or frolics	a person who acts and gets things done