sailor suit vs ensemble

sailor suit and ensemble both are nouns.

Word	Noun	Adjective	Verb	Adverb
sailor suit	Yes	No	No	No
ensemble	Yes	No	No	No

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

sailor suit (noun)	ensemble (noun)
a boy's ensemble; copied from a sailor's uniform	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