drop a dime vs snitch

drop a dime

verb
  • To inform, to call the authorities (on). 

  • He was in the back for a few minutes. Turned out he was dropping a dime on Ralph. 

  • To make a telephone call. 

snitch

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

  • To inform on, especially in betrayal of others. 

noun
  • A ball used in the sport of Quidditch. 

  • A thief. 

  • An informer, one who betrays his group. 

  • A nose. 

  • A tiny morsel. 

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