spear vs protrude

spear is a noun but protrude is not a noun.

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

As verbs, protrude is a hypernym of spear; that is, protrude is a word with a broader meaning than spear:

Other hypernyms of spear include jut, jut out, project, stick out.

spear (noun)	protrude (noun)
a long pointed rod used as a tool or weapon
an implement with a shaft and barbed point used for catching fish

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