exterior vs focal point

exterior

noun
  • Foreign lands. 

  • The outside part, parts or surface of something. 

adj
  • Being from outside a country; foreign. 

  • Outdoor. 

  • Relating to the outside parts or surface of something. 

focal point

noun
  • A solution that people will tend to use in the absence of communication, because it seems natural, special, or relevant. 

  • The centre of any activity. 

  • A focus; a point at which rays of light or other radiation converge. 

  • A feature that attracts particular attention. 

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