devil worship vs diabolism

devil worship

diabolism

noun
  • Character, action, utterances, creative works, behavior or principles appropriate to the devil. 

  • Worship of the devil; Satanism 

  • Possession by Satan or other demonic forces. 

  • The property of having attributes that are demonic or Satanic. 

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