clarion vs halcyon

clarion

adj
  • Of a sound, a voice, a message, etc.: brilliantly clear. 

verb
  • To announce or herald (something) using a clarion (noun sense 1). 

  • Of a thing: to cause (a place) to echo with a sound like that of a clarion. 

  • To sound a clarion; also, to make a high-pitched, piercing sound like that of a clarion. 

  • To announce or herald (something) clearly, especially so as to stir or unite people. 

noun
  • An organ stop consisting of pipes with reeds giving a high-pitched note like that of a clarion (sense 1). 

  • A charge thought to represent a type of wind instrument, a keyboard instrument like a spinet, or perhaps a rest used by a knight to support a lance during jousting. 

  • A medieval brass instrument chiefly used as a battle signal; related to the trumpet, it had a narrow, straight pipe and a high-pitched, piercing sound. 

  • The sound of a clarion (sense 1), or any sound resembling the loud, high-pitched note of a clarion. 

halcyon

adj
  • Calm, undisturbed, peaceful, serene. 

  • Pertaining to the halcyon or kingfisher. 

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. 

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