<human>:  What are the differences between a patio and a porch?
<bot>: The main difference between a patio and a porch is the structure of the space. A patio is typically an outdoor space with paving or other hard surfacing that can be used for entertainment, dining, or relaxation. It is usually separate from the main house and does not have a roof or any walls. A porch, on the other hand, is an outdoor space attached to the main house that typically has a roof and one to three walls. Unlike a patio, a porch is a semi-enclosed space and offers more protection from the elements. Additionally, a porch can be used as more of an additional living space while a patio is generally just used for entertaining.