denialism vs recusancy

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. 

recusancy

noun
  • Obstinate refusal or opposition. 

  • The state of being a recusant; nonconformity. 

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