Jet set and Smart set

Jet set noun - A set of rich and fashionable people who travel widely for pleasure.

Smart set and jet set are semantically related in high society topic. In some cases you can use "Smart set" instead a noun phrase "Jet set". popular alternative

Smart set noun - The fashionable elite.

Jet set and smart set are semantically related in society topic. You can use "Jet set" instead a noun phrase "Smart set", if it concerns topics such as upper class, upper class of people, wealthy fashionable people, fashionable society.