[ben_w]

Also confusing to encounter words whose meaning changes from an inaudible capital letter („Reich“ ~= empire, realm; „reich“ = rich).

At least „die See“/„der See“ (ocean/lake) are at least both about water you can put a boat on.

„Briefkasten“ is a fun one, coming from English. Sounds like "briefcase". Same etymology, both are boxes that you put letters into, it's just that the English one is the thing you carry to work, and the German one is part of the postal system.