quirt vs yark

quirt

verb
  • To strike with a quirt. 

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

yark

verb
  • To crack (a whip). 

  • To hit, strike, especially with a cane or whip. 

  • To draw (stitches etc.) tight. 

  • To make ready; prepare. 

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