Under Cover is attached to the body panel at the bottom of the engine room to reduce the noise from the road while driving and protects the underside of the engine.
Headlining is an interior part attached to the ceiling of a vehicle to block the noise from the ceiling, such as wind and rain noise, and also absorb the noise generated in the cabin. It also protects passengers from head injuries in case of a collision, and is equipped with handles and lamps for convenience.