jet set vs smart set

jet set

noun

  • A social class of wealthy people who travel for pleasure. 

adj

  • Relating to the life style of the jet set. 

verb

  • To follow the life style of the jet set. 

smart set

noun

  • The ultrafashionable part of society; the beau monde. 

How often have the words jet set and smart set occurred in a corpus of books? (source: Google Ngram Viewer )