Here are some of the main differences in vocabulary between British and North American English.
Canadian
American
anywhere
anyplace
autumn
autumn/fall
fall
barrister
lawyer
attorney
beeper, pager
pager
beeper
bill (restaurant)
bill
check
biscuit
cookie
cookie
block of flats
apartment block
apartment building
bonnet
hood
hood
boot (of car)
trunk (of car)
trunk (of automobile)
car
car
automobile
caravan
trailer
trailer
chemist
drugstore
drugstore
chest of drawers
dresser
bureau
chips
French fries/chips
French fries
chocolate bar
chocolate bar
candy bar
the cinema
movies
the movies
clothes peg
clothes peg
clothespin
coffin
coffin
casket
condom
condom
rubber
crisps
potato chips
potato chips
crossroads
intersection
intersection
cupboard
cupboard
closet
cutlery
cutlery
silverware
diversion
diversion, detour
detour
drawing-pin
thumbtack
thumbtack
driving licence
driver's licence
driver's license
dummy (for babies)
soother
pacifier
dustbin
garbage can, trash can
trashcan, garbage can, trashcan
dustman
garbageman
garbage collector
engine
engine
motor
estate agent
real estate agent
realtor
film
movie
movie
flat
apartment
apartment
flat tyre
flat tire
flat
flyover
overpass
overpass
galoshes
galoshes
toe rubbers
gear-lever
gearshift
gearshift
Girl Guide
Girl Guide
Girl Scout
ground floor
ground floor, main floor
first floor
handbag
handbag
purse
holiday
holiday
vacation
jam
jam
jelly
jeans
jeans
blue jeans
jug
jug
pitcher
lift
elevator
elevator
lorry
truck
truck
luggage
luggage
baggage
mad
crazy
crazy
main road
main road, main thoroughfare
highway
maize
corn
corn
maths
math
math
mobile (phone)
cellular phone
cellular
motorbike
motorbike, motorcycle
motorcycle
motorway
highway, thoroughfare
freeway, expressway
motorway
freeway
freeway
napkin
serviette, table napkin
napkin
nappy
diaper
diaper
naughts and crosses
tick-tack-toe
tic-tack-toe
pants
shorts
shorts
pavement
sidewalk, pavement
sidewalk
petrol
gas, gasoline
gas, gasoline
The Plough
Big Dipper
Big Dipper
pocket money
pocket money
allowance
post
mail, post
postbox
mailbox, post-box
mailbox
postcode
postal code
zip code
postman
mailman, letter carrier
mailman
pub
bar, pub
bar
public toilet
bathroom
rest room
puncture
flat
flat
railway
railway
railroad
return (ticket)
return
round-trip
reverse charge
collect call, reverse the charges
call collect