guardian vs tutelar

guardian

noun
  • Someone who guards, watches over, or protects. 

  • A superior in a Franciscan monastery. 

  • A person legally responsible for a minor (in loco parentis). 

  • A person legally responsible for an incompetent person. 

  • A major or final enemy; boss. 

tutelar

noun
  • One that is tutelary. 

adj
  • Serving as a guardian; protective; tutelary. 

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