shaman vs thaumaturgist

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. 

thaumaturgist

noun
  • A performer of thaumaturgy; a performer of miracles; a magician. 

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