corner shop vs malt shop

corner shop

noun
  • A small retail store, often in a residential area, that carries a limited selection of everyday items such as newspapers, sweets and stationery, and is open long hours for the convenience of shoppers. 

malt shop

noun
  • An informal cafe that serves milkshakes and similar products. 

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