protrusion vs excrescence

protrusion and excrescence both are nouns.

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

As nouns, protrusion and excrescence are synonyms defined as:

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

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

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