corps de ballet vs ensemble

corps de ballet and ensemble both are nouns.

Word	Noun	Adjective	Verb	Adverb
corps de ballet	Yes	No	No	No
ensemble	Yes	No	No	No

As nouns, corps de ballet and ensemble are synonyms defined as:

corps de ballet (noun)	ensemble (noun)
the chorus of a ballet company	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