reed instrument vs reed

reed instrument and reed both are nouns.

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

As nouns, reed instrument and reed are synonyms defined as:

reed instrument and reed: a musical instrument that sounds by means of a vibrating reed

Other synonyms of reed instrument include beating-reed instrument.

reed instrument (noun)	reed (noun)
a musical instrument that sounds by means of a vibrating reed	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