driving whip vs thong

driving whip

thong

noun
  • The largest section of a bullwhip constructed of many straps of braided leather. 

  • A strip of leather. 

  • An item of footwear, usually of rubber, secured by two straps which join to pass between the big toe and its neighbour. 

  • An undergarment or swimwear consisting of very narrow strips designed to cover just the genitals and nothing more. 

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