greasy spoon vs soda fountain

greasy spoon

noun
  • An inexpensive diner or other informal restaurant, especially one specializing in frying or grilling. 

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 greasy spoon and soda fountain occurred in a corpus of books? (source: Google Ngram Viewer )