headband vs sweatband

headband

noun
  • A strip of fabric worn around the head. 

  • A hair-accessory, made of a flexible material and curved like a horseshoe, for holding one's hair back. 

  • A strip of fabric attached to the top of the spine of a book; used as decoration and reinforcement. 

  • A thin slip of iron on the tympan of a printing-press. 

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 headband and sweatband occurred in a corpus of books? (source: Google Ngram Viewer )