Of the many replies I have had, some talk of different words for the same thing; but my point was about different meanings for the SAME word.
One respondent mentioned Ass, which in the UK means a donkey or a foolish person, but in the USA it means the human backside.
One other I have thought of is Siding. In the USA it means the exterior wall cladding of a house, but in the UK it means a short branch of railway track used for temporary parking of less urgent trains.
It is useful if a story shows what the word's meaning is intended to be.