don vs egghead

don

noun
  • Any man, bloke, dude. 

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

  • A mafia boss. 

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

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

egghead

noun
  • A bald person, especially a man. 

  • A bald head. 

  • A coldly out of personal touch intellectual. 

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