bubba vs sugar baby

bubba

noun
  • Brother; used as term of familiar address. 

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

sugar baby

noun
  • The younger recipient (usually female or a bottom) of interest from a sugar daddy or sugar mama, especially financial and romantic in an intergenerational relationship 

  • A term of endearment; sweetheart. 

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