bullwhip vs cestus

bullwhip

noun
  • A whip made from plaited leather, often with a knotted end, for use with livestock. 

verb
  • To beat with a bullwhip. 

cestus

noun
  • A leather fighting glove, frequently weighted with metal. 

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