injectant vs inject

injectant is a noun but inject is not a noun.

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

injectant (noun)	inject (noun)
any solution that is injected (as into the skin)

injectant (verb)	inject (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