ecofreak vs sylvan

ecofreak

noun
  • A person with a passion for protecting the natural environment; an ecological activist. 

sylvan

noun
  • One who resides in the woods. 

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

adj
  • Pertaining to the forest, or woodlands. 

  • Residing in a forest or wood. 

  • Wooded, or covered in forest. 

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