counterfeit vs spoil

counterfeit

verb
  • To falsely produce what appears to be official or valid; to produce a forged copy of. 

  • Of a turn or river card, to invalidate a player's hand by making a better hand on the board. 

noun
  • A non-genuine article; a fake. 

  • One who counterfeits; a counterfeiter. 

adj
  • Inauthentic. 

  • False, especially of money; intended to deceive or carry appearance of being genuine. 

  • Assuming the appearance of something; deceitful; hypocritical. 

spoil

verb
  • To render (a ballot paper) invalid by deliberately defacing it. 

  • To ruin the character of, by overindulgence; to coddle or pamper to excess. 

  • To reveal the ending or major events of (a story etc.); to ruin (a surprise) by exposing it ahead of time. 

  • Of food, to become bad, sour or rancid; to decay. 

  • To ruin; to damage (something) in some way making it unfit for use. 

  • To reduce the lift generated by an airplane or wing by deflecting air upwards, usually with a spoiler. 

noun
  • Material (such as rock or earth) removed in the course of an excavation, or in mining or dredging. Tailings. Such material could be utilised somewhere else. 

  • Plunder taken from an enemy or victim. 

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