excrescence vs protrusion

excrescence and protrusion both are nouns.

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

As nouns, excrescence and protrusion are synonyms defined as:

excrescence and protrusion: something that bulges out or is protuberant or projects from its surroundings

Other synonyms of excrescence include bulge, bump, extrusion, gibbosity, gibbousness, hump, jut, prominence, protuberance, swelling.

excrescence (noun)	protrusion (noun)
(pathology) an abnormal outgrowth or enlargement of some part of the body	the act of projecting out from something
something that bulges out or is protuberant or projects from its surroundings	something that bulges out or is protuberant or projects from its surroundings