frappe vs malted milk

frappe

noun
  • A thick milkshake containing ice cream. 

  • A liqueur or cocktail served on shaved ice. 

  • An iced, sweetened, beaten coffee drink, associated with Greek cuisine. 

malted milk

noun
  • A milkshake with malted milk powder added for flavour. 

  • A hot beverage made from a mixture of malted barley, flour, and milk. 

  • A powder made by mixing malted barley, flour and milk, the mixture then being dried by evaporation; initially developed as a nutritional supplement, later used as a flavouring. 

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