cave man vs cave dweller

cave man and cave dweller both are nouns.

Word	Noun	Adjective	Verb	Adverb
cave man	Yes	No	No	No
cave dweller	Yes	No	No	No

As nouns, cave man and cave dweller are synonyms defined as:

Other synonyms of cave man include caveman, troglodyte.

cave man (noun)	cave dweller (noun)
someone who lives in a cave	someone who lives in a cave