aperture vs embouchure

aperture and embouchure both are nouns.

Word	Noun	Adjective	Verb	Adverb
aperture	Yes	No	No	No
embouchure	Yes	No	No	No

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

aperture: an man-made opening; usually small
embouchure: the aperture of a wind instrument into which the player blows directly

Other hyponyms of aperture include mouthpiece, mouthpiece.

aperture (noun)	embouchure (noun)
an man-made opening; usually small	the aperture of a wind instrument into which the player blows directly
a device that controls amount of light admitted
a natural opening in something