headpiece vs sweatband

headpiece

noun
  • Something covering the head. 

  • A headstall. 

  • A decorative page heading used at the start of volumes or chapters. 

  • A headset. 

  • The top piece or part of various things. 

  • Protecting cover for the head; a helmet. 

  • The head; the brain. 

sweatband

noun
  • A band of fabric worn around the wrist or head during sports to absorb perspiration. 

  • A band of fabric, inside the crown of a hat, designed to absorb perspiration. 

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