krummhorn vs double reed

krummhorn and double reed both are nouns.

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

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

krummhorn: a Renaissance woodwind with a double reed and a curving tube (crooked horn)
double reed: a woodwind that has a pair of joined reeds that vibrate together

Other hypernyms of krummhorn include double-reed instrument.

krummhorn (noun)	double reed (noun)
a Renaissance woodwind with a double reed and a curving tube (crooked horn)	a pair of joined reeds that vibrate together to produce the sound in some woodwinds
	a woodwind that has a pair of joined reeds that vibrate together