cap off vs clear up

cap off and clear up both are verbs.

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

As verbs, clear up is a hypernym of cap off; that is, clear up is a word with a broader meaning than cap off:

Other hypernyms of cap off include finish off, finish up, get through, mop up, polish off, wrap up.

cap off (verb)	clear up (verb)
finish or complete, as with some decisive action	free (the throat) by making a rasping sound
	finish a task completely
	make free from confusion or ambiguity; make clear
	make clear and (more) comprehensible
	become clear