cafeteria vs hash house

cafeteria

noun
  • A restaurant in which customers select their food at a counter then carry it on a tray to a table to eat. 

  • A dining area in an institution where meals may be purchased (as above), provided, or brought in from elsewhere. 

hash house

noun
  • A cheap restaurant. 

  • In the sport of rogaining, a central base camp providing hot meals and a place to sleep. 

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