cue vs prompt

cue and prompt both are nouns.

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

As nouns, prompt is a hyponym of cue; that is, prompt is a word with a more specific, narrower meaning than cue:

cue: an actor's line that immediately precedes and serves as a reminder for some action or speech
prompt: a cue given to a performer (usually the beginning of the next line to be spoken)

Other hyponyms of cue include prompting.

As verbs, cue and prompt are synonyms defined as:

cue and prompt: assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned

Other synonyms of cue include remind.

cue (noun)	prompt (noun)
sports implement consisting of a tapering rod used to strike a cue ball in pool or billiards	a cue given to a performer (usually the beginning of the next line to be spoken)
a stimulus that provides information about what to do	(computer science) a symbol that appears on the computer screen to indicate that the computer is ready to receive a command
an actor's line that immediately precedes and serves as a reminder for some action or speech
evidence that helps to solve a problem

cue (adjective)	prompt (adjective)
	performed with little or no delay
	according to schedule or without delay; on time
	ready and willing or quick to act

cue (verb)	prompt (verb)
assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned	serve as the inciting cause of
	assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned
	give an incentive for action