starch vs starchy

starch is a noun but starchy is not a noun.

Word	Noun	Adjective	Verb	Adverb
starch	Yes	No	Yes	No
starchy	No	Yes	No	No

starch (noun)	starchy (noun)
a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles
a commercial preparation of starch that is used to stiffen textile fabrics in laundering

starch (adjective)	starchy (adjective)
	consisting of or containing starch
	rigidly formal

starch (verb)	starchy (verb)
stiffen with starch