bodkin vs cotter pin

bodkin

noun
  • A small sharp pointed tool for making holes in cloth or leather. 

  • A blunt needle used for threading ribbon or cord through a hem or casing. 

  • A dagger. 

  • A type of long thin arrowhead. 

  • A sharp tool, like an awl, formerly used for pressing down individual type characters letters from a column or page in making corrections. 

  • A hairpin. 

adv
  • Closely wedged between two people. 

cotter pin

noun
  • A pin or wedge inserted through a slot to hold machine parts together; a cotter. 

  • A split pin, the ends of which project through an object being fastened and are bent back to hold it in place. 

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