wart vs common wart

wart and common wart both are nouns.

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

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

wart: (pathology) a firm abnormal elevated blemish on the skin; caused by a virus
common wart: a benign growth (often with a rough surface)

wart (noun)	common wart (noun)
(pathology) a firm abnormal elevated blemish on the skin; caused by a virus	a benign growth (often with a rough surface)
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)