chaplet vs coronet

chaplet

noun
  • A headdress in the form of a wreath made of leaves, flowers or twigs woven into a ring. 

  • A set of repetitive prayers, other than the Rosary, typically prayed with a string of beads. 

  • The Chaplet of Divine Mercy, the most well-known chaplet in the Catholic Church. 

  • A metal support for a cylindrical pipe. 

  • A garland or circlet for the head. 

  • A molding in the form of a string of beads; a bead molding. 

  • A small chapel or shrine. 

  • A bent piece of sheet iron, or a pin with thin plates on its ends, for holding a core in place in the mould. 

coronet

noun
  • A small crown, such as is worn by a noble. 

  • The traditional lowest regular commissioned officer rank in the cavalry. 

  • The ring of tissue between a horse's hoof and its leg. 

  • Any of several hummingbirds in the genus Boissonneaua. 

  • A species of moth, Craniophora ligustri. 

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