Translation of Class Names

Should class names be translated?

If yes, what is the meaning of “Nightblade” ?

Is “night” a blade type or something?

Afaik a night blade is just like someone who uses swords at night or from the shadows/darkness, like some kind of assassin/shadowblade

Think of them as a sort of assassin.

“Nightblades were clandestine warriors that sold their services to the great houses of the empire. Nightblades excel with all manner of martial weapons, but are even more feared for the deadly blade magic that is the secret of their trade. Nightblades are not suited to go toe to toe with tougher enemies and rely on illusion to close for quick, devastating attacks or fight from a distance with phantasmal blades.”