puff up vs swell

puff up is not a noun while swell is a noun.

Word	Noun	Adjective	Verb	Adverb
puff up	No	No	Yes	No
swell	Yes	Yes	Yes	No

As verbs, swell is a hypernym of puff up; that is, swell is a word with a broader meaning than puff up:

Other hypernyms of puff up include intumesce, swell up, tumefy, tumesce.

As verbs, puff up and swell are synonyms defined as:

puff up (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

puff up (adjective)	swell (adjective)
	excellent

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