diner vs inn

diner

noun
  • A typically small restaurant, usually modeled after a railroad dining car, that serves lower-class fare, normally having a counter with stools along one side and booths on the other, and often decorated in 50s and 60s pop culture themes and playing popular music from those decades. 

  • One who dines. 

  • A dining car in a railroad train. 

inn

noun
  • A tavern. 

  • One of the colleges (societies or buildings) in London, for students of the law barristers. 

  • Any establishment where travellers can procure lodging, food, and drink. 

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