discard vs junk

discard

verb
  • To throw away, to reject. 

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

  • 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. 

junk

verb
  • To throw away. 

  • To find something for very little money (meaning derived from the term junkshop) 

noun
  • A Chinese sailing vessel. 

  • The genitalia, especially of a male. 

  • Discarded or waste material; rubbish, trash, garbage. 

  • A collection of miscellaneous items of little value. 

  • Any narcotic drug, especially heroin. 

  • Salt beef. 

  • Pieces of old cable or cordage, used for making gaskets, mats, swabs, etc., and when picked to pieces, forming oakum for filling the seams of ships. 

  • Nonsense; gibberish. 

  • Material or resources of a kind lacking commercial value. 

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