horsecloth vs saddlecloth

horsecloth

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

saddlecloth

noun
  • A blanket placed under a saddle, a saddle blanket. 

  • A cloth displaying a racehorse's number. 

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