dusky vs rayless

dusky

adj

  • Dimly lit, as at dusk (evening). 

  • Ashen; having a greyish skin coloration. 

  • Having a shade of color that is rather dark. 

noun

  • A dusky dolphin. 

  • A dusky grouse. 

  • A dusky shark. 

rayless

adj

  • Lightless, gloomy. 

  • Lacking florets. 

  • Lacking rays. 

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