coup de théâtre vs ruse

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. 

ruse

noun
  • An action intended to deceive; a trick. 

  • Cunning, guile, trickery. 

verb
  • To deceive or trick using a ruse. 

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