polish off vs eat up

polish off and eat up both are verbs.

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

As verbs, polish off and eat up are synonyms defined as:

polish off and eat up: finish eating all the food on one's plate or on the table

Other synonyms of polish off include finish.

polish off (verb)	eat up (verb)
finish a task completely	finish eating all the food on one's plate or on the table
finish eating all the food on one's plate or on the table	use up (resources or materials)
kill intentionally and with premeditation	enclose or envelop completely, as if by swallowing