caprine vs goat antelope

caprine

noun
  • Any of certain caprids (including sheep) that are regarded as being similar to the goat; any member of the tribe Caprini. 

adj
  • Goatlike. 

  • Of or relating to goats. 

goat antelope

noun
  • Any of a group of herbivore mammals, the subfamily Caprinae, that includes domestic sheep and goats. 

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