mastodonic vs voluminous

mastodonic

adj
  • huge, gigantic 

  • Of, or pertaining to, the mastodon. 

voluminous

adj
  • Of great volume, or bulk; large. 

  • Having written much, or produced many volumes 

  • Of or pertaining to volume or volumes. 

  • Consisting of many folds, coils, or convolutions. 

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