protrude vs spear up

protrude and spear up both are verbs.

Word	Noun	Adjective	Verb	Adverb
protrude	No	No	Yes	No
spear up	No	No	Yes	No

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

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

protrude (verb)	spear up (verb)
swell or protrude outwards	thrust up like a spear
bulge outward
extend out or project in space