confines vs extremity

confines

noun
  • The borders or limits of an area. 

  • The scope or range of a subject. 

  • Elements that restrain someone. 

extremity

noun
  • The most extreme or furthest point of something. 

  • A hand or foot. 

  • A limb (“major appendage of a human or animal such as an arm, leg, or wing”). 

  • An extreme measure. 

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