tap dancer vs terpsichorean

tap dancer and terpsichorean both are nouns.

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

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

tap dancer: a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes
terpsichorean: a performer who dances professionally

Other hypernyms of tap dancer include dancer, professional dancer.

tap dancer (noun)	terpsichorean (noun)
a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes	a performer who dances professionally

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