crisp vs crispy

crisp is a noun but crispy is not a noun.

Word	Noun	Adjective	Verb	Adverb
crisp	Yes	Yes	Yes	No
crispy	No	Yes	No	No

As adjectives, crisp and crispy are synonyms defined as:

crisp (noun)	crispy (noun)
a thin crisp slice of potato fried in deep fat

crisp (adjective)	crispy (adjective)
pleasantly cold and invigorating	tender and brittle
brief and to the point; effectively cut short
(of hair) in small tight curls
(of something seen or heard) clearly defined
pleasingly firm and fresh
tender and brittle

crisp (verb)	crispy (verb)
make brown and crisp by heating
make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic