equine vs horse-drawn

equine

adj
  • Of or relating to a horse or horses. 

  • Of or relating to any member or members of the genus Equus. 

noun
  • Any horse or horse-like animal, especially one of the genus Equus. 

horse-drawn

adj
  • Pulled along by one or more horses. 

How often have the words equine and horse-drawn occurred in a corpus of books? (source: Google Ngram Viewer )