Jet set and Upper-crust

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

Upper-crust and jet set are semantically related In some cases you can replace phrase "Upper-crust" with "Jet set", this phrases are similar.

Upper-crust adjective - Of high birth, rank, or station.

Jet set and upper-crust are semantically related in society topic. Sometimes you can use "Jet set" instead a noun phrase "Upper-crust".