bird's-eye vs extensive

bird's-eye

adj
  • As if viewed from an altitude; panoramic. 

  • Having spots resembling the eyes of a bird. 

noun
  • A kind of tobacco. 

  • A fabric having a pattern of small circles or diamonds with a spot in each centre. 

  • A figure found in wood, especially hard maple, resembling tiny swirling eyes disrupting the smooth grain. 

extensive

adj
  • Having a great extent; covering a large area; vast. 

  • Serving to extend or lengthen; characterized by extension. 

  • Having a combined system entropy that equals the sum of the entropies of the independent systems. 

  • Considerable in amount. 

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