protrude vs stick out

protrude and stick out both are verbs.

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

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

Other synonyms of protrude include jut, jut out, project.

protrude (verb)	stick out (verb)
swell or protrude outwards	put up with something or somebody unpleasant
bulge outward	extend out or project in space
extend out or project in space	be highly noticeable