When writintg in english its well recommended to take notice of the fact that there are words that have English origin and others that have American origin. Although, both sources are used without any problems its still recommended that you choose one source and use it through out your piece of writing. Here are some of the words i could come up with. If you have anymore please add them

U.K===== USA

Tap===== Faucet
Holiday===== Vacation
Petrol===== Gasoline
Luggage===== Baggage
Puncture===== Blow-out
Pavement ===== Sidewalk
Queue===== Line
Car boot===== Car trunk
Car bonnet===== Car hood
Motorway===== Freeway
Return===== Round-trip
Pram===== Baby-carriage
Aerial===== Antenna
Lift===== Elevator
Rubber===== Eraser
Flat===== Apartment
Wardrobe ===== Closet
Curtains===== Drapes
Parrafin===== Kerosene
Sell tape===== Scotch tape
Garden===== Yard
Biscuit===== Cookie
Chocolate/Sweet===== Candy
Rubbish===== Garbage
Nappy===== Diaper
Tights===== Panti-hose
Note (pound)===== Bill (dollar)
Ground floor===== First floor
Trousers===== Pants
Pants===== Underwear
Underground===== Subway
Subway===== under-pass
Chips===== French-fries
Hand bag===== Purse
Pissed===== Drunk
Crisps===== Chips
Angry===== Pissed
Lorry===== Truck