Carack and First-class

Carack noun - A large galleon sailed in the Mediterranean as a merchantman.

First-class and carack are semantically related. In some cases you can use "First-class" instead an adjective "Carack".

First-class adjective - Of the very best kind.

Carack and first-class are semantically related. Sometimes you can replace term "Carack" with "First-class", this terms are similar.