adopt vs discard

adopt

verb
  • To select and take or approve. 

  • To take voluntarily (a child of other parents) to be in the place of, or as, one's own child. 

  • To take or receive as one's own what is not so naturally. 

  • To obtain (a pet) from a shelter or the wild. 

  • To take by choice into the scope of one's responsibility. 

  • To beat an opponent ten times in a row. 

discard

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

  • To throw away, to reject. 

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

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. 

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