elephantine vs extensive

elephantine

adj
  • Very large. 

  • Of, pertaining to, or characteristic of elephants. 

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 elephantine and extensive occurred in a corpus of books? (source: Google Ngram Viewer )