swap

To swap is to exchange one thing for another, usually in a direct and simple way. It often happens without money, but the main idea is that one thing is given and another takes its place. For example: "The kids swapped baseball cards during recess," or "We swapped recipes at the potluck."

While "exchange" can be used in formal contexts (like currency exchange), "swap" feels more casual and playful. You might exchange goods internationally, but you swap cookies with your neighbor.

The word is also used when people change positions, roles, or one item for another: "Let's swap places so I can see the view," "They swapped roles in the play," or "You can swap butter for oil in this recipe." It can also be a noun: "We made a swap," meaning an exchange took place. In North America, a "swap meet" is an informal market where people gather to trade or buy goods.

Historically, "swap" probably comes from the Middle English word swappen, which meant "to strike." It may have been linked to the idea of striking hands to show agreement in a bargain. Over time, the word moved from that physical action to the idea of trading or replacing one thing with another.

So, whether you're trading collectibles, changing seats, or simply switching things around, "swap" is all about the simple, mutual act of giving and receiving.