coup de théâtre vs warping

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. 

warping

noun
  • An action or motion that warps or twists. 

  • The art or occupation of preparing warp or webs for the weaver. 

  • The practice of flooding agricultural land with turbid river water to add sediment to the soil. 

  • the deformation of the Earth's crust over a large area 

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