cupreous vs gingery

cupreous

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

  • Of or of the nature of copper. 

  • Containing copper. 

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

gingery

adj
  • Somewhat reddish or reddish-brown in colour (especially of hair or skin colouring). 

  • Having a flavour or aroma of the spice ginger; containing that spice. 

  • Having reddish-brown hair. 

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