jawbreaker vs sugar-plum

jawbreaker

noun
  • A large, extremely hard, boiled candy, typically spherical. 

  • A long, hard-to-pronounce word. 

  • A hard blow to the side of the face. 

sugar-plum

noun
  • A round or oval sweet/piece of candy made of boiled sugar. 

  • Term of endearment: sweetheart, darling. 

How often have the words jawbreaker and sugar-plum occurred in a corpus of books? (source: Google Ngram Viewer )