murky vs sunless

murky

adj
  • Dark, dim, gloomy. 

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

  • Cloudy, indistinct, obscure. 

  • Dishonest, shady. 

sunless

adj
  • Without the sun or sunshine; shaded; shadowed. 

  • Dreary, cheerless. 

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