auger vs flail

auger

noun
  • A tool used to bore holes in the ground, e.g. for fence posts 

  • A snake or plumber's snake (plumbing tool). 

  • A hollow drill used to take core samples of soil, ice, etc. for scientific study. 

  • A carpenter's tool for boring holes longer than those bored by a gimlet. 

verb
  • To use an auger; to drill a hole using an auger. 

  • To proceed in the manner of an auger. 

flail

noun
  • A tool used for threshing, consisting of a long handle with a shorter stick attached with a short piece of chain, thong or similar material. 

  • A weapon which has the (usually spherical) striking part attached to the handle with a flexible joint such as a chain. 

verb
  • To beat using a flail or similar implement. 

  • To wave or swing vigorously 

  • To thresh. 

  • To move like a flail. 

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