stick in vs inject

stick in and inject both are verbs.

Word	Noun	Adjective	Verb	Adverb
stick in	No	No	Yes	No
inject	No	No	Yes	No

As verbs, inject is a hyponym of stick in; that is, inject is a word with a more specific, narrower meaning than stick in:

stick in (verb)	inject (verb)
place, fit, or thrust (something) into another thing	give an injection to
insert casually	to introduce (a new aspect or element)
	to insert between other elements
	feed intravenously
	take by injection
	force or drive (a fluid or gas) into by piercing