exterior vs extraneous

exterior

adj
  • Being from outside a country; foreign. 

  • Outdoor. 

  • Relating to the outside parts or surface of something. 

noun
  • Foreign lands. 

  • The outside part, parts or surface of something. 

extraneous

adj
  • Not belonging to, or dependent upon, a thing; without or beyond a thing; foreign 

  • Not essential or intrinsic 

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