auger vs edder

auger

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

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

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

  • 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. 

edder

noun
  • An adder or snake. 

  • Flexible wood worked into the top of hedge stakes, to bind them together. 

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