adusk vs brunette

adusk

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

adv
  • At dusk; in the dusk or twilight. 

brunette

adj
  • of a dark color or tone. 

  • having brown or black hair and, often, dark eyes and darkish or olive skin. 

noun
  • A person, especially female, with brown or black hair and, often, dark eyes and darkish or olive skin. 

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