shaman vs wizard

shaman

noun
  • A traditional (unscientific) faith healer. 

  • A member of certain tribal societies who acts as a spiritual and, or religious medium between the concrete and spirit worlds. 

wizard

noun
  • Someone, usually male, who uses (or has skill with) magic, mystic items, and magical and mystical practices. 

  • One who is especially skilled or unusually talented in a particular field. 

  • One of the administrators of a multi-user dungeon. 

  • A virgin over the age of 30. 

  • A computer program or script used to simplify complex operations, often for an inexperienced user. 

verb
  • To practice wizardry. 

  • To conjure. 

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