sweatband vs tiara

sweatband

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

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

tiara

noun
  • An ornamental coronet. 

  • The papal crown. 

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