pokey vs scalpel

pokey

noun
  • knife. 

  • prison. 

adj
  • slow 

  • fast 

  • of small volume, cramped 

scalpel

noun
  • A small straight knife with a very sharp blade used for surgery, dissection and craftwork. 

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