nippy vs snappy

nippy and snappy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nippy	No	Yes	No	No
snappy	No	Yes	No	No

As adjectives, nippy and snappy are synonyms defined as:

Other synonyms of nippy include crisp, frosty, nipping.

nippy (adjective)	snappy (adjective)
pleasantly cold and invigorating	pleasantly cold and invigorating
a sharp biting taste	quick and energetic
	marked by up-to-dateness in dress and manners
	apt to speak irritably
	smart and fashionable