carmine vs cupreous

carmine

noun
  • A purplish-red colour, resembling that pigment. 

  • A purplish-red pigment, made from dye obtained from the cochineal beetle; carminic acid or any of its derivatives. 

  • carmine 

adj
  • Of the purplish red colour shade carmine. 

cupreous

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

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

  • Of or of the nature of copper. 

  • Containing copper. 

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