Centre

Centre is the UK and Commonwealth spelling of Center (US)

Although within the US The word "centre" often means places or buildings where an activity takes place, while "center" is a mathematical or locational mid point (center of a room). Common examples are:
 a town centre or city centre
 a shopping centre is a place with lots of shops.
 a sports centre is where people go to use sports facilities, such as squash courts, and swimming pools.
 a centre (ice hockey), the position used in ice hockey
 a Center (American football), the position used in American football
a balanced political position.

Places
Centre, the former name of Centre-Val de Loire, an administrative region of France
Centre Department, the department of Haiti