confines vs purview

confines

noun
  • The scope or range of a subject. 

  • Elements that restrain someone. 

  • The borders or limits of an area. 

purview

noun
  • Scope or range of interest or control. 

  • Range of understanding. 

  • The scope of a statute. 

  • The enacting part of a statute. 

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