keratosis vs wart

keratosis and wart both are nouns.

Word	Noun	Adjective	Verb	Adverb
keratosis	Yes	No	No	No
wart	Yes	No	No	No

As nouns, wart is a hyponym of keratosis; that is, wart is a word with a more specific, narrower meaning than keratosis:

keratosis: a skin condition marked by an overgrowth of layers of horny skin
wart: (pathology) a firm abnormal elevated blemish on the skin; caused by a virus

keratosis (noun)	wart (noun)
a skin condition marked by an overgrowth of layers of horny skin	(pathology) a firm abnormal elevated blemish on the skin; caused by a virus
	any small rounded protuberance (as on certain plants or animals)
	an imperfection in someone or something that is suggestive of a wart (especially in smallness or unattractiveness)