denialism vs disaffirmation

denialism

noun
  • The practice of rejecting propositions which are strongly supported by scientific or historical evidence, and often of seeking to influence policy processes and outcomes accordingly. 

disaffirmation

noun
  • The act of denial; a declaration that something is not true. 

  • Repudiation of self or other. 

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