filmmaker vs auteur

filmmaker and auteur both are nouns.

Word	Noun	Adjective	Verb	Adverb
filmmaker	Yes	No	No	No
auteur	Yes	No	No	No

As nouns, auteur is a hyponym of filmmaker; that is, auteur is a word with a more specific, narrower meaning than filmmaker:

filmmaker: a producer of motion pictures
auteur: a filmmaker who has a personal style and keeps creative control over his or her works

Other hyponyms of filmmaker include director, film director, New Waver.

filmmaker (noun)	auteur (noun)
a producer of motion pictures	a filmmaker who has a personal style and keeps creative control over his or her works