bluey vs copper

bluey

adj
  • Having a colour similar to blue. 

noun
  • The metal lead. 

  • A person with red hair. 

  • A bluebottle. 

  • A bushman's blanket. 

  • A disposable underpad. 

  • A collection of clothes and other belongings rolled up into a bundle for carrying; a swag. 

  • A blue film. 

  • A blue singlet, especially one from the Bonds clothing label. 

  • A blue cattle dog, especially a blue heeler. 

copper

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

  • Made of 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. 

verb
  • To sheathe or coat with copper. 

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