craps vs trots

craps

noun
  • (preceded by the) diarrhea 

  • A game of gambling, or chance, where the players throw dice to make scores and avoid crap. 

trots

noun
  • Diarrhoea/diarrhea. 

  • A trotting race meet; harness racing. 

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