gelatinous vs gummous

gelatinous

adj
  • Jelly-like. 

  • Of or referring to gelatin. 

gummous

adj
  • gum-like, or composed of gum; gummy 

  • Of or pertaining to a gumma. 

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