callback vs replay

callback

noun
  • The return of a situation to a previous position or state. 

  • A joke which references an earlier joke in the same routine. 

  • A follow-up audition in casting. 

  • A function pointer passed as an argument to another function. 

  • A return telephone or radio call; especially one made automatically to authenticate a logon to a computer network. 

  • A form of audience participation in which the audience shout lines in response to the dialog of a film. 

  • A product recall because of a defect or safety concern. 

replay

noun
  • A repetition of another event, scene, or occurrence; a recurrence or reenactment. 

  • A repeat or subsequent playing of some or all of something which was previously broadcast or performed, or a playing of something which was recorded, such as a live event or a television broadcast, the gameplay of a computer game, etc. 

  • A replayed match, often after the first game or match ended in a draw; a rematch. 

  • A (video or audio) recording of an action or event that is or can be replayed after being recorded; saved video footage (which is, or can be, replayed) of the gameplay of a computer game, a (portion of a) televised sports match, etc. 

  • An act or instance of replaying (of playing something, such as a game, again); a replaying of (something). 

verb
  • To display a recording of a previous event, especially multiple times. 

  • To play again. 

How often have the words callback and replay occurred in a corpus of books? (source: Google Ngram Viewer )