swell up vs blister

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

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

As verbs, blister is a hyponym of swell up; that is, blister is a word with a more specific, narrower meaning than swell up:

Other hyponyms of swell up include distend, belly, belly out, blow up, puff, puff out, puff up, bloat, vesicate.

swell up (noun)	blister (noun)
	(pathology) an elevation of the skin filled with serous fluid
	(botany) a swelling on a plant similar to that on the skin
	a flaw on a surface resulting when an applied substance does not adhere (as an air bubble in a coat of paint)