pop out vs protrude

pop out and protrude both are verbs.

Word	Noun	Adjective	Verb	Adverb
pop out	No	No	Yes	No
protrude	No	No	Yes	No

As verbs, pop out and protrude are synonyms defined as:

Other synonyms of pop out include bug out, bulge, bulge out, come out, pop, start.

pop out (verb)	protrude (verb)
come out suddenly or forcefully	swell or protrude outwards
exit briefly	bulge outward
bulge outward	extend out or project in space
appear suddenly or unexpectedly; happen unexpectedly