sticking vs protruding

sticking and protruding both are adjectives.

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

As adjectives, sticking and protruding are synonyms defined as:

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

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

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