double-dealing vs trapping

double-dealing

noun
  • deceit or treachery 

adj
  • Cheating, dishonest; treacherous. 

trapping

noun
  • An instance of ensnaring something or someone. 

  • An ornamental covering or harness for a horse; caparison. 

How often have the words double-dealing and trapping occurred in a corpus of books? (source: Google Ngram Viewer )