coup de théâtre vs gimmick

coup de théâtre

noun
  • A theatrical trick or gesture, something staged for dramatic effect. 

  • A sudden or unexpected event in a play, pulled off by the author, the director, or even an actor. 

gimmick

noun
  • A trick or device used to attain some end. 

  • A night out with one's friends. 

  • A gimmick capacitor. 

  • A clever ploy or strategy. 

verb
  • To rig or set up with a trick or device. 

How often have the words coup de théâtre and gimmick occurred in a corpus of books? (source: Google Ngram Viewer )