discard vs put out to grass

discard

verb
  • To make a discard; to throw out a card. 

  • To throw away, to reject. 

  • To dismiss from employment, confidence, or favour; to discharge. 

noun
  • A temporary variable used to receive a value of no importance and unable to be read later. 

  • Anything discarded. 

  • A discarded playing card in a card game. 

put out to grass

verb
  • Synonym of put out to pasture 

How often have the words discard and put out to grass occurred in a corpus of books? (source: Google Ngram Viewer )