dour vs ruggy

dour

adj
  • Expressing gloom or melancholy. 

  • Stern, harsh and forbidding. 

  • Unyielding and obstinate. 

ruggy

adj
  • fusty, frowsy 

  • Of, relating to, or resembling a rug. 

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