chevreuil vs roe deer

chevreuil

noun
  • A roe deer, a roebuck. 

roe deer

noun
  • A small, nimble Eurasian deer with no visible tail, a white rump patch, and a reddish summer coat that turns grey in winter, the male having short three-pointed antlers (Capreolus capreolus and Capreolus pygargus). 

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