hautboy vs musette pipe

hautboy and musette pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
hautboy	Yes	No	No	No
musette pipe	Yes	No	No	No

As nouns, musette pipe is a hyponym of hautboy; that is, musette pipe is a word with a more specific, narrower meaning than hautboy:

hautboy: a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece
musette pipe: a small simple oboe

Other hyponyms of hautboy include basset oboe, heckelphone, oboe da caccia, oboe d'amore, shawm.

hautboy (noun)	musette pipe (noun)
a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece	a small simple oboe