bathing trunks vs swimsuit

bathing trunks

noun
  • A pair of shorts or briefs worn for swimming or bathing. 

swimsuit

noun
  • A garment worn for swimming. 

  • A tight-fitting one-piece garment worn by women and girls. 

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