cloudy vs roily

cloudy

adj
  • Covered with or characterised by clouds; overcast. 

  • Using or relating to cloud computing. 

  • Containing pith 

  • Not transparent or clear. 

  • Uncertain; unclear. 

roily

adj
  • muddy, cloudy (having lots of sediment) 

  • turbulent 

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