bikini vs smallclothes

bikini

noun
  • A brief two-piece bathing suit worn by girls and women, especially one that exposes the midriff and navel. 

  • A brief bathing suit worn by men. 

smallclothes

noun
  • Knee-length breeches, worn especially in the 18th century. 

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