cafe vs roadhouse

cafe

noun
  • A convenience store, originally one that sold coffee and similar basic items. 

roadhouse

noun
  • A truck stop located in a remote area, with basic accommodation facilities. 

  • A receiving house. 

  • An inn or similar establishment situated beside a road beyond the jurisdiction of a town or city. 

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