belly dancer vs terpsichorean

belly dancer and terpsichorean both are nouns.

Word	Noun	Adjective	Verb	Adverb
belly dancer	Yes	No	No	No
terpsichorean	Yes	Yes	No	No

As nouns, terpsichorean is a hypernym of belly dancer; that is, terpsichorean is a word with a broader meaning than belly dancer:

Other hypernyms of belly dancer include dancer, professional dancer.

belly dancer (noun)	terpsichorean (noun)
a woman who performs a solo belly dance	a performer who dances professionally

belly dancer (adjective)	terpsichorean (adjective)
	of or relating to dancing