copper vs yew

copper

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

  • 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. 

verb
  • To sheathe or coat with copper. 

adj
  • Made of copper. 

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

yew

noun
  • in family Cephalotaxaceae 

  • A species of coniferous tree, Taxus baccata, with dark-green flat needle-like leaves and seeds bearing red arils, native to western, central and southern Europe, northwest Africa, northern Iran and southwest Asia. 

  • Any tree or shrub of the genus Taxus. 

  • The wood of the such trees. 

  • A bow for archery, made of yew wood. 

  • in family Podocarpaceae 

adj
  • Made from the wood of the yew tree. 

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