copper vs hazel

copper

adj
  • Having the reddish-brown colour/color of copper. 

  • Made of copper. 

verb
  • To sheathe or coat with copper. 

noun
  • The reddish-brown colour/color of copper. 

  • A police officer. 

  • A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29. 

  • Any of various lycaenid butterflies with copper-coloured upperwings, especially those of the genera Lycaena and Paralucia. 

hazel

adj
  • Of a greenish-brown colour. (often used to refer to eye colour) 

noun
  • The wood of a hazelnut tree. 

  • Freestone. 

  • The nut of the hazel tree. 

  • A tree or shrub of the genus Corylus, bearing edible nuts called hazelnuts or filberts. 

  • A greenish-brown colour, the colour of a ripe hazelnut. 

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