gramineous vs verdurous

gramineous

adj
  • Of or pertaining to plants in the grass family (Gramineae, Poaceae). 

verdurous

adj
  • Having youthful or new qualities. 

  • Freshly green; verdant; covered with verdure, or consisting of it. 

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