extensive vs large-scale

extensive

adj
  • Considerable in amount. 

  • Serving to extend or lengthen; characterized by extension. 

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

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

large-scale

adj
  • Large in amount, scope or extent. 

  • Drawn large so as to show detail. 

How often have the words extensive and large-scale occurred in a corpus of books? (source: Google Ngram Viewer )