feed vs nitrify

feed is a noun but nitrify is not a noun.

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

As verbs, nitrify is a hyponym of feed; that is, nitrify is a word with a more specific, narrower meaning than feed:

Other hyponyms of feed include dung, topdress.

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

feed (verb)	nitrify (verb)
provide with fertilizers or add nutrients to	treat (soil) with nitrates
introduce continuously	treat with nitrogen or a nitrogen compound
take in food; used of animals only	convert into nitric acid, nitrous acid, or nitrate, especially with the action of nitrobacteria
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