A plasma display is an emissive flat panel display where light is created by phosphors excited by a plasma discharge between two flat panels of glass.
LCD: Liquid crystal display television is, as indicated by its name.
LCD will last longer than a Plasma.
Although a lot of newer plasmas have a 1/2 life of 60,000.00 hours.
Plasma TVs are bigger than LCD.
Plasma has a higer contrast ratio (deeper blacks)
LCD comes in much smaller sizes than Plasma.
Plasma TV's cost less then LCD.