healer vs kahuna

healer

noun
  • One who heals, especially through faith. 

  • Anything that heals; a medicine that heals some wound, injury, ailment, or disease. 

kahuna

noun
  • A priest or priestess of the traditional Hawaiian religion. 

  • A great surfer. 

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