arboriform vs sylvan

arboriform

adj
  • Resembling a tree in shape or appearance. 

sylvan

adj
  • Wooded, or covered in forest. 

  • Pertaining to the forest, or woodlands. 

  • Residing in a forest or wood. 

noun
  • A fabled deity of the wood; a faun, a satyr. 

  • One who resides in the woods. 

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