enlighten vs clear up

enlighten and clear up both are verbs.

Word	Noun	Adjective	Verb	Adverb
enlighten	No	No	Yes	No
clear up	No	No	Yes	No

As verbs, enlighten and clear up are synonyms defined as:

enlighten and clear up: make free from confusion or ambiguity; make clear

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

Other hypernyms of enlighten include clarify, elucidate.

enlighten (verb)	clear up (verb)
make free from confusion or ambiguity; make clear	free (the throat) by making a rasping sound
make understand	finish a task completely
give spiritual insight to; in religion	make free from confusion or ambiguity; make clear
	make clear and (more) comprehensible
	become clear