ducky vs sugar-plum

ducky

noun
  • An affectionate pet name. 

  • A duck (aquatic bird), especially a toy rubber duck. 

adj
  • Darling, charming, cute. 

  • Resembling or characteristic of a duck. 

sugar-plum

noun
  • Term of endearment: sweetheart, darling. 

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

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