extensive vs selective

extensive

adj
  • 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. 

  • Considerable in amount. 

selective

adj
  • Having the authority or capability to make a selection. 

  • choosy, fussy or discriminating when selecting. 

  • Of or relating to the process of selection. 

  • Of or relating to natural selection. 

  • Of or relating to the social work approach called selectivity. 

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