arboreal vs ligneous

arboreal

adj
  • Of, relating to, or resembling a tree. 

  • Covered or filled with trees. 

  • Living in or among trees. 

noun
  • Any tree-dwelling creature. 

ligneous

adj
  • Of, or resembling wood; woody. 

  • Containing lignin or xylem. 

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