malted milk vs thickshake

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. 

thickshake

noun
  • A beverage consisting of milk and ice cream mixed together, often with other flavorings as well. 

  • An imitation milkshake (in locales where "milkshake" refers to the drink specified above), often containing no milk. 

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