chorus line vs ensemble

chorus line and ensemble both are nouns.

Word	Noun	Adjective	Verb	Adverb
chorus line	Yes	No	No	No
ensemble	Yes	No	No	No

As nouns, ensemble is a hyponym of chorus line; that is, ensemble is a word with a more specific, narrower meaning than chorus line:

Other hyponyms of chorus line include corps de ballet.

chorus line (noun)	ensemble (noun)
a body of dancers or singers who perform together	a coordinated outfit (set of clothing)
	the chorus of a ballet company
	a group of musicians playing or singing together
	an assemblage of parts or details (as in a work of art) considered as forming a whole
	a cast other than the principals