overfeed vs feed

overfeed is not a noun while feed is a noun.

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

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

Other hypernyms of overfeed include give.

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

overfeed (verb)	feed (verb)
feed excessively	provide with fertilizers or add nutrients to
	introduce continuously
	take in food; used of animals only
	give food to
	serve as food for; be the food for
	feed into; supply
	provide as food
	gratify
	profit from in an exploitatory manner
	move along, of liquids
	support or promote