bather vs actor

bather and actor both are nouns.

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

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

Other hypernyms of bather include doer, worker.

bather (noun)	actor (noun)
a person who travels through the water by swimming	a theatrical performer
a person who takes a bath	a person who acts and gets things done