maillot vs swimming costume

maillot

noun
  • A one-piece swimsuit (for women) 

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

swimming costume

noun
  • the garments that one wears when bathing in the sea or a swimming pool, especially the one-piece garment worn by women and girls. 

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