dancer vs hoofer

dancer and hoofer both are nouns.

Word	Noun	Adjective	Verb	Adverb
dancer	Yes	No	No	No
hoofer	Yes	No	No	No

As nouns, hoofer is a hyponym of dancer; that is, hoofer is a word with a more specific, narrower meaning than dancer:

dancer (noun)	hoofer (noun)
a performer who dances professionally	a professional dancer
a person who participates in a social gathering arranged for dancing (as a ball)