Mounting strap: Anchors fixture to outlet box in ceiling.
Canopy: Decorative cover hides electrical hookups.
Nipple: Threads into mounting strap.
Hanger Loop: Connects chain to nipple.
Chain/Rod: Shade must hang at least six inches from ceiling to be considered a pendant.
Socket: Powers bulb. Porcelain sockets stand up better to heat than metal ones.
Shade: Controls direction, spread, and color of light.
Washer: Supports shade. Threads onto outside of socket.
Bulb: Wattage should not exceed capacity on fixture's label.