horsewhip vs nagaika

horsewhip

noun
  • A whip for use on horses. 

verb
  • To flog or lash with a horsewhip. 

nagaika

noun
  • A short, thick braided whip with a round cross-section, used by the Cossacks. 

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