A plug in pendant light or drop is a device that hangs from the ceiling by a rope or chain attached to the electrical panel in the ceiling. They are popular in the kitchen and bar to provide even illumination of the work surface.
Education to plug in pendant light: turn off the power. Confirm the power is off by tapping the end of a non-contact voltage detector wires. Strip 3/8 inch of insulation off the three cables coming out of the box with wire stripper.
Twist the black wire from the box with the black wire on the device with pliers. Install a twist-on wire connector on top. Twist the white wire from the box with the white wire on the device with pliers. Install a twist-on wire connector on top. Finally, to plug in pendant light, loosen the ground screw. Wrap the green or bare wire from the device around the screw and tighten.