protrude vs cantilever

protrude is not a noun while cantilever is a noun.

Word	Noun	Adjective	Verb	Adverb
protrude	No	No	Yes	No
cantilever	Yes	No	Yes	No

As verbs, cantilever is a hyponym of protrude; that is, cantilever is a word with a more specific, narrower meaning than protrude:

Other hyponyms of protrude include overhang, push up, thrust, spear, spear up, bag, bulge.

protrude (noun)	cantilever (noun)
	projecting horizontal beam fixed at one end only

protrude (verb)	cantilever (verb)
swell or protrude outwards	construct with girders and beams such that only one end is fixed
bulge outward	project as a cantilever
extend out or project in space