inject vs feed

inject is not a noun while feed is a noun.

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

As verbs, feed is a hypernym of inject; that is, feed is a word with a broader meaning than inject:

Other hypernyms of inject include give.

inject (noun)	feed (noun)
	food for domestic livestock

inject (verb)	feed (verb)
give an injection to	provide with fertilizers or add nutrients to
to introduce (a new aspect or element)	introduce continuously
to insert between other elements	take in food; used of animals only
feed intravenously	give food to
take by injection	serve as food for; be the food for
force or drive (a fluid or gas) into by piercing	feed into; supply
	provide as food
	gratify
	profit from in an exploitatory manner
	move along, of liquids
	support or promote