Cobbler vs boor

Cobbler

noun
  • A person from Northamptonshire (traditionally a centre for shoemaking) 

boor

noun
  • A Boer, white South African of Dutch or Huguenot descent. 

  • An uncultured person. 

  • A yokel, country bumpkin. 

  • A peasant. 

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