counterfeit vs derivate

counterfeit

noun
  • One who counterfeits; a counterfeiter. 

  • A non-genuine article; a fake. 

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. 

adj
  • Inauthentic. 

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

  • Assuming the appearance of something; deceitful; hypocritical. 

derivate

noun
  • Something derived; a derivative. 

adj
  • Derived; derivative. 

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