ruby vs yew

ruby

noun
  • A red bird-of-paradise, Paradisaea rubra. 

  • A deep red colour. 

  • A ruby hummer, a South American hummingbird, Clytolaema rubricauda. 

  • A pronunciation guide written above or beside Chinese or Japanese characters. 

  • A clear, deep, red variety of corundum, valued as a precious stone. 

  • The tincture red or gules. 

adj
  • Of a deep red colour. 

verb
  • To make red; to redden. 

yew

noun
  • in family Podocarpaceae 

  • 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. 

  • in family Cephalotaxaceae 

  • The wood of the such trees. 

  • A bow for archery, made of yew wood. 

adj
  • Made from the wood of the yew tree. 

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