bathing trunks vs onesie

bathing trunks

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

onesie

noun
  • One-piece adult loungewear jumpsuit. 

  • One-piece fashionable streetwear worn mostly by teenagers. 

  • A one-piece garment for an infant or small child, generally worn over a diaper. 

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