protrusion vs wart

protrusion and wart both are nouns.

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

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

protrusion: something that bulges out or is protuberant or projects from its surroundings
wart: any small rounded protuberance (as on certain plants or animals)

Other hyponyms of protrusion include frontal eminence, occipital protuberance, belly, caput, mogul, nub, nubble, snag.

protrusion (noun)	wart (noun)
the act of projecting out from something	(pathology) a firm abnormal elevated blemish on the skin; caused by a virus
something that bulges out or is protuberant or projects from its surroundings	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)