double reed vs reed

double reed and reed both are nouns.

Word	Noun	Adjective	Verb	Adverb
double reed	Yes	No	No	No
reed	Yes	No	No	No

As nouns, reed is a hypernym of double reed; that is, reed is a word with a broader meaning than double reed:

double reed: a pair of joined reeds that vibrate together to produce the sound in some woodwinds
reed: a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it

Other hypernyms of double reed include vibrating reed.

As nouns, reed is a hypernym of double reed; that is, reed is a word with a broader meaning than double reed:

double reed: a woodwind that has a pair of joined reeds that vibrate together
reed: a musical instrument that sounds by means of a vibrating reed

Other hypernyms of double reed include beating-reed instrument, reed instrument.

double reed (noun)	reed (noun)
a pair of joined reeds that vibrate together to produce the sound in some woodwinds	a musical instrument that sounds by means of a vibrating reed
a woodwind that has a pair of joined reeds that vibrate together	a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it
	tall woody perennial grasses with hollow slender stems especially of the genera Arundo and Phragmites