doublecross vs snitch

doublecross

noun
  • An instance of betrayal of one who has been led to believe that the betrayer was assisting them. 

  • The hybrid product of double-crossing. 

verb
  • To betray someone by leading them into a trap after having gained their trust and led them to believe that they were actually being aided. 

snitch

noun
  • An informer, one who betrays his group. 

  • A ball used in the sport of Quidditch. 

  • A thief. 

  • A nose. 

  • A tiny morsel. 

verb
  • To inform on, especially in betrayal of others. 

  • To contact or cooperate with the police for any reason. 

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