bubba vs sugar-plum

bubba

noun
  • Brother; used as term of familiar address. 

  • A working-class white male from the southern US, stereotyped as loutish. 

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