We power our cars with gas. They use petrol.

And, if we need to look in our car’s dark trunk for something, we use a flashlight. They would use a torch to search their dark boot.

Then there are idioms. Some British and American idioms have the same meaning, but use different words. For example, in the U.S. if you want to add your opinion to a conversation, you put in your two cents. In the U.K., they put in their tuppence (or two pence) worth. Makes sense. They have pence and we don’t.

Another example is the idiom about discussing the same issue again and again, especially if it cannot be resolved.

We say, “Don’t beat a dead horse!” The British, on the other hand, advise against flogging one. And, if you are keeping secrets in the United States, you have skeletons in the closet. In Great Britain, your skeletons would be hiding in a cupboard.

But the real fun begins when we start exploring idioms and expressions that are unique to each country.

Let’s start with “Bob’s your uncle.” To an American ear, that is a weird expression. And it has nothing to do with any relative you may or may not have named Bob. It is just a way to finish a set of simple instructions.

What is the equivalent -- the different but equal saying -- in the U.S.? Americans might say, “and there you have it!” Or sometimes, more dramatic people will say, “Ta-da!”

For example, imagine you are explaining to someone how to use your new fancy, coffee maker.

You explain: “First, you grind the beans. Then you put them in the side container and pour water in the main container. Push the button and ten minutes later -- ta-da! -- you have a pot of coffee!

Sometimes over a fresh pot of coffee, you may want to have a long talk with a friend. You might even throw in a little gossip. We call that a chat, or if it’s a short conversation, chit-chat. The British would call it a “chin-wag.”

If a British person says, “I’ve got the hump,” we might think they are sick and need to see a doctor. But in fact, when Brits say they have a hump, it means they are mildly annoyed or upset. In the U.S., some informal ways to say we are upset are “I’m ticked off” or “I’m miffed.”

Now, when Americans are really surprised by something, we can say we “are at a loss for words.” Or more informally, we simply say we are “shocked” or “blown away.”

Across the Atlantic in the U.K., they are “gobsmacked.” In the U.S., we don’t get smacked by gobs. Ever.

Finally, a familiar word used by both countries but in different ways is “cheers.” We use the word over drinks when we are wishing someone good health or congratulating an accomplishment. The British use “cheers” to mean “thank you.” For that, we Americans say, “Thank you!”

apartment – n. a usually rented room or set of rooms that is part of a building and is used as a place to live (British = flat)
elevator – n. a machine used for carrying people and things to different levels in a building (British = lift)
diaper – n. a piece of cloth or other material that is placed between a baby's legs and fastened around the waist to hold body waste (British = nappies)
stroller – n. a small carriage with four wheels that a baby or small child can ride in while someone pushes it (British = prams)
trunk – n. the enclosed space in the rear of an automobile for carrying articles (British = boot)
flashlight – n. a small electric light that can be carried in your hand and that runs on batteries (British = torch)
flog – v. to beat or whip (someone) severely
smack – v. to strike so as to produce a smack
gob – n. lump : a large amount
skeleton – n. the structure of bones that supports the body of a person or animal
closet – n. a usually small room that is used for storing things (such as clothing, towels, or dishes) (British = cupboard)
fancy – adj. pricey and fashionable
grind – v. to crush or break (something) into very small pieces by rubbing it against a rough surface or using a special machine
gossip – n. information about the behavior and personal lives of other people