Ambiguous tag. Try to use another tag if one exists.

* For a carton that starts off as a square box, but then forms a triangle at the top, use [[milk_carton]].
* For a small, hand-sized, typically rectangular container often accompanied by a [[drinking straw]], use [[juice_box]].
* For any cubic or rectangular container used to hold something inside it, use [[box]] or, if applicable, [[cardboard_box]].