sortilege vs wizardry

sortilege

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

wizardry

noun
  • Something, such as an advanced technology, that gives the appearance of magic. 

  • The art of a wizard; sorcery. 

  • Great ability in some specified field. 

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