bubba vs cobber

bubba

noun
  • Brother; used as term of familiar address. 

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

cobber

noun
  • A pal, buddy, mate, friend; often used in direct address by one male to another. 

  • A sweet consisting of a small block of hard caramel covered in chocolate. 

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