The spot where you install a light fixture is an outlet.

Areceptacleis where a plug is inserted.

In practice, people use them pretty interchangeably.

ungrounded, two-prong outlet

Power receptacles are described in terms of amperage (amps) and voltage (volts).

Some appliances need a lot of electricity very fast, some need less at a slower rate.

Plugging them into the wrong receptacle can be exciting!

three-pronged receptacle

But also very dangerous.

The bottom prong is the ground, which is what prevents electricity from leaping out of your power receptacle.

And if you see a face here, its a phenomenon calledpareidolia.

receptacle for 20 amps, 120/125 volts

They provide slightly zippier amperage for appliances that draw more power than most, like your microwave oven.

That means you cant plug smaller things into this receptacle because of the higher voltage.

Its intended for appliances that need a lot of power.

receptacle for 20 amps, 240/250 volts

Youll often find one installed near the windows in your home because theyre used for large window-mounted air conditioners.

Chances are if you have one you wont have a use for it.

Theyre required in damp areas like kitchens and bathrooms to prevent water from shorting out the receptacle.

receptacle for 30 amps, 240/250 volts

This can be handy if you have a lot of devices that need charging.

receptacle for 50 amps, 125/250 volts

GFCI and AFCI receptacle

USB Outlet