halcyon vs sylvan

halcyon

noun
  • The dead body of such a bird, said in Tudor times to act as a weather vane when hung from a beam. 

  • A kingfisher whose nesting by the sea was said, in classical mythology, to cause the Gods to restrain the wind and waves. 

  • A tropical kingfisher of the genus Halcyon, such as the sacred kingfisher (Halcyon sancta) of Australia. 

adj
  • Pertaining to the halcyon or kingfisher. 

  • Calm, undisturbed, peaceful, serene. 

sylvan

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

  • One who resides in the woods. 

adj
  • Pertaining to the forest, or woodlands. 

  • Residing in a forest or wood. 

  • Wooded, or covered in forest. 

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