Driveway:
A driveway is a type of private road for local access to one or a small group of structures, and is owned and maintained by an individual, a group, a Society or an establishment. Driveways may be decorative in ways that public roads cannot, because of their lighter traffic and the willingness of owners to invest in their construction; and are generally designed to conform to the architecture of connected houses or other buildings. Materials used for driveways include concrete, decorative brick, cobblestone, block paving, asphalt, and decomposed granite, surrounded with grass or other ground-cover plants. Driveways are commonly used as paths to private garages, carports, or houses. On large estates, a driveway may be the road that leads to the house from the public road, possibly with a gate in between. Some driveways divide to serve different homeowners.
Porch:
A porch is usually a semi-covered area where cars can stop to allow the passenger/s to enter or exit. It is the interstitial space between the driveway and the entrance of the building; particularly in corporate or institutional or public buildings. There are various styles of porches, all of which depend on the architectural tradition of its location. All porches will allow for sufficient space for a person to comfortably pause before entering or after exiting the building.
Patio:
Often the driveway in a residence leads to a patio. Also called forecourt or yard, it is an outdoor space or a paved area between a residence and a garden. Patios are most commonly constructed from paving slabs also known as paving flags. There are two main types of paving slab; concrete or stone. Concrete slabs are cheaper than their natural stone counterparts. This is because the cost of production is far lower. Concrete slabs are produced solely within a manufacturing plant unlike natural stone which is extracted from quarries. As well as paving slabs, patios can also be created using other durable surfaces such as bricks, block paving, tile, concrete, natural paving stones or cobbles.