polish off vs eat

polish off and eat both are verbs.

Word	Noun	Adjective	Verb	Adverb
polish off	No	No	Yes	No
eat	No	No	Yes	No

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

polish off (verb)	eat (verb)
finish a task completely	cause to deteriorate due to the action of water, air, or an acid
finish eating all the food on one's plate or on the table	take in solid food
kill intentionally and with premeditation	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