filthy vs ruggy

filthy

adj
  • Very unpleasant or disagreeable. 

  • Covered with filth; very dirty. 

  • Obscene or offensive. 

verb
  • To make very dirty; to saturate something with dirt. 

  • To cover in filth. 

ruggy

adj
  • fusty, frowsy 

  • Of, relating to, or resembling a rug. 

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