bloat vs puffiness

bloat and puffiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
bloat	Yes	No	Yes	No
puffiness	Yes	No	No	No

As nouns, puffiness is a hypernym of bloat; that is, puffiness is a word with a broader meaning than bloat:

bloat: swelling of the rumen or intestinal tract of domestic animals caused by excessive gas
puffiness: an abnormal protuberance or localized enlargement

Other hypernyms of bloat include lump, swelling.

bloat (noun)	puffiness (noun)
swelling of the rumen or intestinal tract of domestic animals caused by excessive gas	lack of elegance as a consequence of being pompous and puffed up with vanity
	an abnormal protuberance or localized enlargement

bloat (verb)	puffiness (verb)
become bloated or swollen or puff up
make bloated or swollen