faun vs roe deer

faun

noun
  • A woodland creature with pointed ears, legs, and short horns of a goat and a fondness for unrestrained revelry. 

  • Any of various nymphalid butterflies of the genus Faunis. 

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 faun and roe deer occurred in a corpus of books? (source: Google Ngram Viewer )