divination vs sortilege

divination

noun
  • The apparent art of discovering secrets or the future by preternatural means. 

  • The act of divining; a foreseeing or foretelling of future events. 

  • An indication of what is to come in the future or what is secret; a prediction. 

sortilege

noun
  • Witchcraft, magic, especially as a means of making decisions or predictions. 

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