Ace and Topflight

Ace adjective - Having or showing exceptional knowledge, experience, or skill in a field of endeavor.

Topflight and ace are semantically related in good topic. In some cases you can use "Topflight" instead an adjective "Ace".

Topflight adjective - Of the very best kind.

Ace and topflight are semantically related in good topic. Sometimes you can use "Ace" instead an adjective "Topflight", if it concerns topics such as excellent.