drilling vs pricking

drilling

noun
  • Act of drilling. 

  • A heavy, twilled fabric of linen or cotton; drill. 

  • A long firearm with three barrels (typically a mix of shotgun and rifle barrels). 

pricking

noun
  • The driving of a nail into a horse's foot so as to produce lameness. 

  • The act of piercing or puncturing with a sharp point. 

  • A sensation that pricks. 

  • A nicking. 

  • The mark or trace left by a hare's foot; a prick. 

  • The act of tracing a hare by its footmarks. 

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