clairvoyance vs sortilege

clairvoyance

noun
  • Acute intuitive insight or perceptiveness; sagacity. 

  • The power to see the future. 

sortilege

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

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