bird's-eye view vs eyeshot

bird's-eye view

noun
  • The view from directly or high above. 

  • A general overview or summary of a topic. 

eyeshot

noun
  • Range of vision, a distance in which something is visible. 

  • Range. 

How often have the words bird's-eye view and eyeshot occurred in a corpus of books? (source: Google Ngram Viewer )