sticking out vs protruding

sticking out and protruding both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sticking out	No	Yes	No	No
protruding	No	Yes	No	No

As adjectives, sticking out and protruding are synonyms defined as:

sticking out and protruding: extending out above or beyond a surface or boundary

Other synonyms of sticking out include jutting, projected, projecting, relieved, sticking.

sticking out (adjective)	protruding (adjective)
extending out above or beyond a surface or boundary	extending out above or beyond a surface or boundary