extensive vs livelong

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. 

livelong

adj
  • total, complete, whole 

noun
  • the orpine, Sedum telephium 

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