callow vs halcyon

callow

noun
  • A callow young bird. 

  • An alluvial flat. 

  • A callow or teneral phase of an insect or other arthropod, typically shortly after ecdysis, while the skin still is hardening, the colours have not yet become stable, and as a rule, before the animal is able to move effectively. 

adj
  • Newly emerged or hatched, juvenile. 

  • Immature, lacking in life experience. 

  • Lacking color or firmness (of some kinds of insects or other arthropods, such as spiders, just after ecdysis); teneral. 

  • Shallow or weak-willed. 

  • Unburnt. 

  • Unfledged (of a young bird), featherless. 

  • Of land: low-lying and liable to be submerged. 

  • Bald, hairless, bare. 

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. 

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