bathing suit vs racing briefs

bathing suit

noun
  • A tight-fitting garment worn for swimming, especially the one piece garment worn by women and girls; a swimsuit. 

racing briefs

noun
  • A briefs-style male swimsuit typically worn in competitive swimming and diving. 

How often have the words bathing suit and racing briefs occurred in a corpus of books? (source: Google Ngram Viewer )