disbelief vs paganism

disbelief

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

  • Astonishment. 

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

paganism

noun
  • Any indigenous polytheistic religion. 

  • Any of a class of religions often associated with nature rituals. 

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