cameo vs sweatband

cameo

noun
  • A piece of jewelry, etc., carved in relief. 

  • A single very brief appearance, especially by a prominent celebrity in a movie or song. 

verb
  • To appear in a cameo role. 

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. 

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