Icelandic has teningur which means die in the toy sense, or cube in the mathematical/scientific sense.
It has three words for sphere-like things: kúla which can refer to any kind of ball that's usually hard, like a bowling ball or a billiards ball, or a sphere in the mathmatical sense, hnöttur/knöttur which can also be used mathematically and sometimes for referring to sports related balls in a semi-formal sense. The h-version is also used to refer to planets, especially in fiction and literature (less in science). Lastly we have bolti, clearly cognate with 'ball' which is the most normal/least marked word to refer to toy or sport-related ball, but is not used in a mathematical/scientific context at all.
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