Actually Whitehall, in the beginning yes it was made of flannel!!
Here is another - over here the less discerning drinkers will have soda with their whiskey/whisky - single malts are spoilt with that!
So the generic name for soft drinks like SevenUp, Coke, Pepsi etc is "pop" - soda is a specific type of mixer!
In Arizona they often get "cider" wrong - there is no such thing as "hard cider" - cider is an alcoholic drink made with apples, non-alcoholic apple juice is called ...............apple juice!
The one I feel may make as much sense in American is "Mac and cheese" which we call "macaroni cheese". I probably think the latter is more correct though, because "mac and cheese" can just mean a plate with pasta and a hunk of cheddar on it!!!