As they say, two countries divided by a common language.
Here are just a few of the words that surprised and confused me.
Flannel Wash cloth
Cling film Plastic wrap
Kitchen roll Paper towels
Loo roll Toilet paper
Washing up liquid Dish soap
Chips French fries
Biscuits Cookies or crackers
Fanny Slang for female genitals
Footwell Floorboard (of a car)
Then there are all the different words for nether parts. This can be particularly embarrassing when, like a small child, you announce, "What's a quim?" You just don't know what things are going to mean here. I thought it was a fruit.