clear up vs finish off

clear up and finish off both are verbs.

Word	Noun	Adjective	Verb	Adverb
clear up	No	No	Yes	No
finish off	No	No	Yes	No

As verbs, clear up and finish off are synonyms defined as:

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

clear up (verb)	finish off (verb)
free (the throat) by making a rasping sound	finish a task completely
finish a task completely
make free from confusion or ambiguity; make clear
make clear and (more) comprehensible
become clear