inject vs injector

inject is not a noun while injector is a noun.

Word	Noun	Adjective	Verb	Adverb
inject	No	No	Yes	No
injector	Yes	No	No	No

inject (noun)	injector (noun)
	a contrivance for injecting (e.g., water into the boiler of a steam engine or particles into an accelerator etc.)
	An injector, ejector, steam ejector, steam injector, eductor-jet pump or thermocompressor is a type of pump.

inject (verb)	injector (verb)
give an injection to
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