ensemble vs dramatis personae

ensemble and dramatis personae both are nouns.

Word	Noun	Adjective	Verb	Adverb
ensemble	Yes	No	No	No
dramatis personae	Yes	No	No	No

As nouns, dramatis personae is a hypernym of ensemble; that is, dramatis personae is a word with a broader meaning than ensemble:

Other hypernyms of ensemble include cast, cast of characters.

ensemble (noun)	dramatis personae (noun)
a coordinated outfit (set of clothing)	the actors in a play
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