maillot vs monokini

maillot

noun
  • A one-piece swimsuit (for women) 

  • A leotard or tights of stretchable jersey fabric, generally worn by dancers, gymnasts or cyclists. 

monokini

noun
  • A one-piece swimsuit, which may cover both the chest and the crotch (as contrasted with a bikini, which consists of two pieces). 

  • The lower part of a bikini without the upper part (i.e., topless). 

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