knout vs quirt

knout

verb
  • To flog or beat with a knout. 

noun
  • A leather scourge (multi-tail whip), in the severe version known as 'great knout' with metal weights on each tongue, notoriously used in imperial Russia. 

quirt

verb
  • To strike with a quirt. 

noun
  • A rawhide whip plaited with two thongs of buffalo hide. 

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