curer vs healer

curer

noun
  • A healer. 

  • A person who, or device which preserves food by curing. 

healer

noun
  • One who heals, especially through faith. 

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

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