feast vs eat

feast is a noun but eat is not a noun.

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

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

feast (noun)	eat (noun)
something experienced with great delight
an elaborate party (often outdoors)
a meal that is well prepared and greatly enjoyed
a ceremonial dinner party for many people

feast (verb)	eat (verb)
partake in a feast or banquet	cause to deteriorate due to the action of water, air, or an acid
provide a feast or banquet for	take in solid food
gratify	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