smoothie vs thickshake

smoothie

noun
  • A drink made from whole fruit, thus thicker than fruit juice. 

  • A smooth-talking person. 

  • A blending of different things, a mishmash 

  • A member of the mod subculture who is relatively non-violent and wears expensive clothing. 

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 smoothie and thickshake occurred in a corpus of books? (source: Google Ngram Viewer )