caprid vs ibex

caprid

noun
  • Any member of the subfamily Caprinae. 

adj
  • Of or pertaining to the subfamily Caprinae of ruminants, of which the goat (genus Capra) is the type. 

ibex

noun
  • A type of wild mountain goat of the genus Capra, such as the species Capra ibex. 

  • An imaginary creature with serrated horns, somewhat similar to the heraldic antelope. 

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