nifty vs swell

nifty is not a noun while swell is a noun.

Word	Noun	Adjective	Verb	Adverb
nifty	No	Yes	No	No
swell	Yes	Yes	Yes	No

As adjectives, nifty and swell are synonyms defined as:

Other synonyms of nifty include bang-up, bully, corking, cracking, dandy, great, groovy, keen, neat, not bad, old, peachy, slap-up, smashing.

nifty (noun)	swell (noun)
	a crescendo followed by a decrescendo
	the undulating movement of the surface of the open sea
	a rounded elevation (especially one on an ocean floor)
	a man who is much concerned with his dress and appearance

nifty (adjective)	swell (adjective)
excellent	excellent

nifty (verb)	swell (verb)
	expand abnormally
	cause to become swollen
	increase in size, magnitude, number, or intensity
	come up, as of a liquid
	become filled with pride, arrogance, or anger
	come up (as of feelings and thoughts, or other ephemeral things)