gumdrop vs sugar-plum

gumdrop

noun
  • A small chewy candy made with corn syrup, gelatin, and flavouring. 

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 gumdrop and sugar-plum occurred in a corpus of books? (source: Google Ngram Viewer )