cunning folk vs sorcerer

cunning folk

noun
  • professional or semi-professional practitioners of magic (who were often charlatans) who were active from at least the 15th up until the early 20th century. 

sorcerer

noun
  • A magician or wizard, sometimes specifically male. 

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