disbelief vs propaganda

disbelief

noun
  • Astonishment. 

  • Unpreparedness, unwillingness, or inability to believe that something is the case. 

  • The loss or abandonment of a belief; cessation of belief. 

propaganda

noun
  • A concerted set of messages aimed at influencing the opinions or behavior of large numbers of people. 

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