cash vs dead horse

cash

adj
  • Great; excellent; cool. 

noun
  • Any of several low-denomination coins of India, China, or Vietnam, especially the Chinese copper coin. 

  • Money in the form of notes/bills and coins, as opposed to cheques/checks or electronic transactions. 

  • Cash register, or the counter in a business where the cash register is located. 

  • An instance of winning a cash prize. 

  • Liquid assets, money that can be traded quickly, as distinct from assets that are invested and cannot be easily exchanged. 

  • Money. 

verb
  • To obtain a payout from a tournament. 

  • To exchange (a check/cheque) for money in the form of notes/bills. 

  • To disband. To do away with, kill 

dead horse

noun
  • Tomato sauce. 

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