exterior vs innermost

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. 

innermost

noun
  • That which is innermost; the core. 

adj
  • Farthest inside or towards the center or middle. 

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