reed vs reed instrument

reed and reed instrument both are nouns.

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

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

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

Other synonyms of reed include beating-reed instrument.

reed (noun)	reed instrument (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