Grazer vs boor

Grazer

noun
  • A native or inhabitant of Graz. 

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 Grazer and boor occurred in a corpus of books? (source: Google Ngram Viewer )