Britlish goes for icing on a cake (frosting on Frosties ) and stuffing in a turkey or chicken.

Dressing is what you put on a salad, the most popular being French Dressing (essentially oil, vinegar and mustard).

Dunno about the "suet ball of plum pudding" WW. Both Xmas puds and Xmas cakes don't tend to get hung up around here - instead they sit around in the kitchen and get "fed" loads of alcohol . Funny thing is the bottle of spirits in the kitchen always disappears quicker than it goes into the cake/pud. Can't think why. [innocence]