auger vs spade

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. 

spade

noun
  • A garden tool with a handle and a flat blade for digging. Not to be confused with a shovel which is used for moving earth or other materials. 

  • A playing card marked with the symbol ♠. 

  • A castrated man or animal. 

  • A black person. 

  • A cutting instrument used in flensing a whale. 

  • A hart or stag three years old. 

verb
  • To turn over soil with a spade to loosen the ground for planting. 

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