Final answer:
A door that uses an interior frame of stiles and rails with corrugated cardboard in between, covered by a veneer or hardboard, is known as a Hollow Core Door.
Step-by-step explanation:
The type of door described in the question is a Hollow Core Door. This door is constructed with a frame made up of stiles and rails that create a rigid structure, but instead of being filled with a solid material, the space is filled with corrugated cardboard. The door is covered by a skin that might be composed of veneer, hardboard, plastic, or metal, which gives the door a finished appearance. Hollow Core Doors are often lighter and less expensive compared to Solid Core Doors, making them a popular choice for interior doors where insulation and soundproofing are not primary concerns.