quirt vs yerk

quirt

verb
  • To strike with a quirt. 

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

yerk

verb
  • To throw or thrust with a sudden, smart movement; to kick or strike suddenly; to jerk. 

  • To bind or tie with a jerk. 

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