ensemble vs corps de ballet

ensemble and corps de ballet both are nouns.

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

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

ensemble (noun)	corps de ballet (noun)
a coordinated outfit (set of clothing)	the chorus of a ballet company
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