armlet vs circlet

armlet

noun
  • A band worn on the arm for ornamental or identification purposes. 

  • A small arm. 

circlet

noun
  • A ring (typically of gold or silver) worn as an ornament on the head. 

  • A round body; an orb. 

  • A crown without arches or a covering. 

  • A small circle. 

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