clouded vs murky

clouded

adj
  • Made dim or blurry. 

  • Variegated with spots. 

  • Filled with clouds. 

  • Unclear; surrounded in mystery. 

murky

adj
  • Dark, dim, gloomy. 

  • Hard to see through, as a fog or mist. 

  • Cloudy, indistinct, obscure. 

  • Dishonest, shady. 

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