AmE versus BrE part 4: de K a O

American English	British English
K
kerosene/kerosine	paraffin
kilometer	kilometre
Kleenex	tissue
L
labor	labour
ladies' room	Ladies
ladybug	ladybird
laundry soap	washing up powder
law offices	chambers
lawyer	solicitor, barrister
laid off	redundant
leash	lead
legal holiday	bank holiday
letter opener	paper knife
license plate	number plate
life vest	life jacket
to line	to queue
liter	litre
long distance bus	coach
lost and found	lost property
M
mail	post
mailbox	letterbox
mailman	postman
main street	high street
mashed potatoes	mashed potato
math	maths
Men's Room	Gents
mom	mum
motor (fuel-burning or electrical devices)	engine
motorcycle	motorbike
movie	film
movie theater	cinema
N
Native American	American Indian
neighbor	neighbour
newspaper store	newsagent's
newsstand	bookstall
nightstand	bedside table
notebook	exercise book
O
oatmeal	porridge
one-way ticket	single ticket
overpass	flyover
overtime	extra time

Abraços e bom estudo!