The main difference is in their roles: a plug is the device at the end of a cord that you insert into a socket (also called an outlet or receptacle) to connect an appliance or device to electricity. The plug has prongs or pins, while the socket has slots or holes to receive them. Sockets are usually fixed to walls or surfaces, providing access to electrical power, and plugs are attached to the cords of devices you want to power.

A plug-in socket is commonly referred to as an electrical outlet or receptacle. These are the fixed points in your home or office where you can insert a plug to access electricity. Some people also call them wall sockets or power points. The terms can vary by region, but they all describe the same thing—a spot where you plug in your devices to get power.

There are several common types of outlets you might see:

• Standard outlets (usually two or three-prong)
• GFCI outlets (with test and reset buttons for added safety)
• USB outlets (include USB ports for charging devices)
• Surge protector outlets (help protect electronics from voltage spikes)

Each type serves a different purpose, so it helps to choose the one that fits your needs best.

Both terms are used, but in the U.S., outlet or receptacle is more common, while socket is often used in other countries. All these words refer to the place where you plug in electrical devices. If you're shopping or asking for help, using "outlet" will usually make things clear in most American stores.

You might need a plug adapter if your device's plug doesn't match the shape or type of the outlets where you want to use it. This often happens when traveling or using older homes with different outlet styles. Check the prongs on your plug and compare them to the outlet—if they don't fit, a plug adapter can help bridge the difference. Always make sure the adapter is rated for your device's voltage and current for safe use.