counterfeit vs pervert

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. 

pervert

verb
  • To corrupt; to cause to be untrue; corrupted or otherwise impure 

  • To turn another way; to divert. 

  • to misinterpret designedly. 

  • To misapply, misuse, use for a nefarious purpose 

  • To become perverted; to take the wrong course. 

noun
  • A person whose sexual habits are not considered acceptable. 

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