nipping vs crisp

nipping is not a noun while crisp is a noun.

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

As adjectives, nipping and crisp are synonyms defined as:

Other synonyms of nipping include frosty, nippy, snappy.

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

nipping (adjective)	crisp (adjective)
pleasantly cold and invigorating	pleasantly cold and invigorating
capable of wounding	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

nipping (verb)	crisp (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