adusk vs shady

adusk

adj
  • Resembling conditions at dusk or twilight, low-lit, dark; in darkness, gloomy. 

adv
  • At dusk; in the dusk or twilight. 

shady

adj
  • Overspread with shade; sheltered from the glare of light or sultry heat. 

  • Abounding in shades. 

  • Mean, cruel. 

  • Not trustworthy; disreputable. 

  • Causing shade. 

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