woodwind vs reed

woodwind and reed both are nouns.

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

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

Other hyponyms of woodwind include beating-reed instrument, reed instrument, flute, transverse flute.

woodwind (noun)	reed (noun)
any wind instrument other than the brass instruments	a musical instrument that sounds by means of a vibrating reed
	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