brassy vs cupreous

brassy

adj
  • Resembling brass. 

  • Unfeeling; pitiless. 

  • Impudent; impudently bold. 

  • Harsh in tone. 

noun
  • Kyphosus vaigiensis, a fish found in southeast Asia. 

cupreous

adj
  • Containing copper. 

  • Of a reddish-brown color, like that of polished copper. 

  • Of or of the nature of copper. 

noun
  • A reddish-brown color, like that of polished copper. 

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