counterfeit vs personate

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. 

personate

verb
  • To fraudulently portray another person; to impersonate. 

  • To portray a character (as in a play); to act. 

  • To attribute personal characteristics to something; to personify. 

  • To set forth in an unreal character; to disguise; to mask. 

adj
  • Having the throat of a corolla nearly closed by a projection of the base of the lower lip (in a way reminiscent of a mask), as in the flower of the snapdragon. 

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