pasture vs eat

pasture is a noun but eat is not a noun.

Word	Noun	Adjective	Verb	Adverb
pasture	Yes	No	Yes	No
eat	No	No	Yes	No

As verbs, eat is a hypernym of pasture; that is, eat is a word with a broader meaning than pasture:

Other hypernyms of pasture include feed.

pasture (noun)	eat (noun)
bulky food like grass or hay for browsing or grazing horses or cattle
a field covered with grass or herbage and suitable for grazing by livestock

pasture (verb)	eat (verb)
feed as in a meadow or pasture	cause to deteriorate due to the action of water, air, or an acid
let feed in a field or pasture or meadow	take in solid food
	eat a meal; take a meal
	take in food; used of animals only
	use up (resources or materials)
	worry or cause anxiety in a persistent way