strickle vs xyster

strickle

noun
  • A tool for sharpening scythes. 

  • An instrument used for smoothing the surface of a core. 

  • A templet; a pattern. 

  • A rod used to level grain etc. when being measured, or concrete after pouring. 

  • An instrument used in dressing flax. 

verb
  • To level using a strickle. 

xyster

noun
  • A surgical instrument used to scrape bones. 

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