horsecloth vs horsehair

horsecloth

noun
  • A rug or similar cloth used to cover a horse, or as part of its trappings. 

horsehair

noun
  • A fabric made from this. 

  • The hair of a horse, especially from the mane and tail, used for upholstery. 

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