inn vs soda fountain

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. 

soda fountain

noun
  • A counter, in a shop, at which sodas, ice-creams etc are prepared and served. 

  • An apparatus for dispensing carbonated soft drinks. 

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