pishogue vs theurgist

pishogue

noun
  • Magic, witchcraft; a spell, especially one designed to cause or cure illnesses to man or beast, or to increase or decrease the quantities of farm products such as butter or milk. 

theurgist

noun
  • One who claims or is alleged to perform magic with the aid of beneficent spirits. 

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