countermove vs falsify

countermove

verb
  • To move in opposition or in retaliation. 

noun
  • A move in opposition or response to a preceding move. 

falsify

verb
  • To misrepresent. 

  • To alter so as to make false; to make incorrect. 

  • To prove to be false. 

  • To counterfeit; to forge. 

  • To show (an item of charge inserted in an account) to be wrong. 

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