crystal-gazing vs prophecy

crystal-gazing

noun
  • The making of predictions about the future, especially when these are seen as very speculative. 

  • The action or practice of gazing into a crystal ball in the hope or belief of seeing the future. 

prophecy

noun
  • A prediction, especially one made by a prophet or under divine inspiration. 

  • The public interpretation of Scripture. 

How often have the words crystal-gazing and prophecy occurred in a corpus of books? (source: Google Ngram Viewer )