halcyon vs unclear

halcyon

adj
  • Pertaining to the halcyon or kingfisher. 

  • Calm, undisturbed, peaceful, serene. 

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. 

unclear

adj
  • Not easy to see or read; indecipherable or unreadable. 

  • Ambiguous; liable to more than one interpretation. 

  • Not having a clear idea; uncertain. 

  • Not clearly or explicitly defined. 

verb
  • To undo the process of clearing. 

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