polish off vs get through

polish off and get through both are verbs.

Word	Noun	Adjective	Verb	Adverb
polish off	No	No	Yes	No
get through	No	No	Yes	No

As verbs, polish off and get through are synonyms defined as:

Other synonyms of polish off include clear up, finish off, finish up, mop up, wrap up.

polish off (verb)	get through (verb)
finish a task completely	finish a task completely
finish eating all the food on one's plate or on the table	become clear or enter one's consciousness or emotions
kill intentionally and with premeditation	be in or establish communication with
	succeed in reaching a real or abstract destination after overcoming problems
	spend or pass, as with boredom or in a pleasant manner; of time