eat vs glut

eat is not a noun while glut is a noun.

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

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

eat (noun)	glut (noun)
	the quality of being so overabundant that prices fall

eat (verb)	glut (verb)
cause to deteriorate due to the action of water, air, or an acid	overeat or eat immodestly; make a pig of oneself
take in solid food	supply with an excess of
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