reed vs reedy

reed is a noun but reedy is not a noun.

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

reed (noun)	reedy (noun)
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

reed (adjective)	reedy (adjective)
	having a tone of a reed instrument
	resembling a reed in being upright and slender