roily vs stormy

roily

adj
  • turbulent 

  • muddy, cloudy (having lots of sediment) 

stormy

adj
  • Characterized by, or proceeding from, a storm; subject to storms; agitated with strong winds and heavy rain. 

  • Of or pertaining to storms. 

  • Violent; passionate; rough. 

  • Proceeding from violent agitation or fury. 

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