arborescent vs arborous

arborescent

adj
  • Like a tree; having a structure or appearance similar to that of a tree; branching. 

  • Marked by insistence on totalizing principles, binarism and dualism (as opposed to the rhizome theory). 

arborous

adj
  • Formed by trees; filled or covered with trees. 

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