oboe vs hautbois

oboe and hautbois both are nouns.

Word	Noun	Adjective	Verb	Adverb
oboe	Yes	No	No	No
hautbois	Yes	No	No	No

As nouns, oboe and hautbois are synonyms defined as:

oboe and hautbois: a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece

Other synonyms of oboe include hautboy.

oboe (noun)	hautbois (noun)
a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece	a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece