First-class and First

First-class adjective - Of the very best kind.

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

First adjective - Coming before all others in time or order.

First-class and first are semantically related in highest in importance topic. Sometimes you can use "First-class" instead an adjective "First".

Nearby Word: firstly