cue / queue are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
cue: (noun) an actor's line that immediately precedes and serves as a reminder for some action or speech. (noun) sports implement consisting of a tapering rod used to strike a cue ball in pool or billiards.
queue: (noun) a line of people or vehicles waiting for something. (noun) (information processing) an ordered list of tasks to be performed or messages to be transmitted. (noun) a braid of hair at the back of the head.
cue: k·y·UW
queue: k·y·UW
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)