binding vs safety pin

binding

noun
  • An item (usually rope, tape, or string) used to hold two or more things together. 

  • A finishing on a seam or hem of a garment. 

  • The action or result of making two or more molecules stick together. 

  • The spine of a book where the pages are held together. 

  • The association of a named item with an element of a program. 

  • The interface of a library with a programming language other than one it is written in. 

adj
  • Imposing stipulations or requirements that must be honoured. 

  • Having the effect of counteracting diarrhea. 

safety pin

noun
  • A pin in the form of a clasp, which has a guard to cover the sharp point; used to join two pieces of fabric, etc., together temporarily. 

  • The pin of a hand grenade, which prevents accidental detonation. 

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