Adapter

An adapter is like a tool that helps things fit together even if they don't match exactly, kind of like putting a puzzle piece in the wrong spot but using a special tool to make it fit anyway. For example, if you have a toy that needs batteries but the batteries you have are the wrong shape or size, you can use an adapter to make them work. The adapter changes the way the batteries fit into the toy so they can work together. This is useful because you don't always have the exact thing you need, but with an adapter, you can make it work anyway.