What is Kanzu???? Gown is Gauni

In Duolingo, "Kanzu" is translated "gown" or "robe". A kanzu is a white or cream colored tunic-type garment that hangs to the ankles or floor. It is traditionally worn by men. It has it's origins among the Arabs, who first introduced it to East Africa.

And is a gauni not a gown? What about a long dress -- would that be a gauni?

kanza and gauni both have gown as optional interpretation. either should be allowed.

Gauni safi is incorrect?