coppery vs sepia

coppery

adj
  • Resembling the metal copper, especially in color. 

  • Containing copper, especially if abundantly. 

sepia

adj
  • Of a dark reddish-brown colour. 

noun
  • A sepia-coloured drawing or photograph. 

  • A dark brown pigment made from the secretions of the cuttlefish. 

  • A dark, slightly reddish, brown colour. 

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