circlet vs watchband

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. 

watchband

noun
  • a band of leather, metal etc that fastens a wristwatch to the wrist; a watchstrap 

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