film producer vs auteur

film producer and auteur both are nouns.

Word	Noun	Adjective	Verb	Adverb
film producer	Yes	No	No	No
auteur	Yes	No	No	No

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

film producer: 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 film producer include director, film director, New Waver.

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