acquire vs discard

acquire

verb
  • To contract. 

  • To sample signals and convert them into digital values. 

  • To gain, usually by one's own exertions; to get as one's own 

  • To get. 

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. 

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