boor vs lubber

boor

noun
  • An uncultured person. 

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

  • A yokel, country bumpkin. 

  • A peasant. 

lubber

noun
  • An inexperienced or novice sailor; a landlubber. 

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