scutch vs yark

scutch

verb
  • To separate the woody fibre from (flax, hemp, etc.) by beating; to swingle. 

noun
  • A bricklayer's small picklike tool with two cutting edges (or prongs) for dressing stone or cutting and trimming bricks. 

  • The woody fibre of flax or hemp; the refuse of scutched flax or hemp. 

  • A tuft or clump of grass. 

  • A wooden implement shaped like a large knife used to separate the valuable fibres of flax or hemp by beating them and scraping from it the woody or coarse portions. 

yark

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

  • To crack (a whip). 

  • To draw (stitches etc.) tight. 

  • To make ready; prepare. 

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