cupreous vs mousy

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. 

mousy

adj
  • Of a greyish-brown colour. 

  • Abounding in or infested with mice. 

  • mousy 

  • Timid. 

  • Quiet; stealthy. 

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