exterior vs extrinsic

exterior

adj
  • Relating to the outside parts or surface of something. 

  • Being from outside a country; foreign. 

  • Outdoor. 

noun
  • Foreign lands. 

  • The outside part, parts or surface of something. 

extrinsic

adj
  • external; separable from the thing itself; inessential 

  • not belonging to something; outside 

noun
  • An external factor 

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