aquatic vs arboreal

aquatic

noun
  • Any aquatic plant. 

adj
  • Relating to water; living in or near water, taking place in water. 

arboreal

noun
  • Any tree-dwelling creature. 

adj
  • Covered or filled with trees. 

  • Of, relating to, or resembling a tree. 

  • Living in or among trees. 

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