rawhide vs sjambok

rawhide

verb
  • To beat with a rawhide whip. 

  • To clear (a pump) of sediment by starting and stopping it repeatedly. 

noun
  • Untanned hide. 

  • A whip made from twisted untanned leather. 

sjambok

verb
  • To whip with a sjambok; to horsewhip. 

noun
  • A stout whip, especially made of rhinoceros or hippopotamus hide. 

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