clue vs cue

clue and cue both are nouns.

Word	Noun	Adjective	Verb	Adverb
clue	Yes	No	Yes	No
cue	Yes	No	Yes	No

As nouns, clue and cue are synonyms defined as:

Other synonyms of clue include clew.

clue (noun)	cue (noun)
a slight indication	sports implement consisting of a tapering rod used to strike a cue ball in pool or billiards
evidence that helps to solve a problem	a stimulus that provides information about what to do
	an actor's line that immediately precedes and serves as a reminder for some action or speech
	evidence that helps to solve a problem

clue (verb)	cue (verb)
roll into a ball	assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned