don vs schoolman

don

noun
  • A university professor, particularly one at Oxford or Cambridge. 

  • An employee of a university residence who lives among the student residents. 

  • A mafia boss. 

  • Any man, bloke, dude. 

verb
  • To put on clothing; to dress (oneself) in an article of personal attire. 

schoolman

noun
  • A medieval writer, scholar or teacher of the subjects taught at early European universities (such as theology, metaphysics and logic); a scholastic. 

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