pyramidal vs voluminous

pyramidal

adj
  • Pyramid-shaped. 

  • Tetragonal. 

noun
  • One of the carpal bones. 

voluminous

adj
  • Consisting of many folds, coils, or convolutions. 

  • Having written much, or produced many volumes 

  • Of or pertaining to volume or volumes. 

  • Of great volume, or bulk; large. 

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