cobber vs dawg

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. 

dawg

noun
  • Dude, bud, pal, used to address a close male friend. 

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