horse chestnut vs yew

horse chestnut

noun
  • The large nutlike seed of these trees. 

  • Any of several tree species of genus Aesculus, especially Aesculus hippocastanum, common in temperate northern hemisphere. 

yew

noun
  • The wood of the such trees. 

  • 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 

  • 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 horse chestnut and yew occurred in a corpus of books? (source: Google Ngram Viewer )