Most people when they say "air filter" are referring to the engine air filter. Cabin air filter cleans the air that comes into the car, goes through the heater core or air conditioner and then out through the vents into the cabin of the car.
No, the cabin air filter is of a size and design to filter the air inside the cabin of the car. The "air filter" refers to the filter used to provide filtered air to be taken into the engine for combustion. Hope this helps. "G"