Five-star and Upper-class

Five-star adjective - Of the very best kind.

Upper-class and five-star are semantically related. In some cases you can use "Upper-class" instead an adjective phrase "Five-star".

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

Five-star and upper-class are semantically related. Sometimes you can use "Five-star" instead an adjective phrase "Upper-class".