Essentially there is no difference between a static caravan and a mobile home. Some people use the term mobile home to describe Park Homes, whilst static caravans are normally referred to when discussing holiday parks.
A mobile home (also static caravan, caravan, trailer, trailer home, house trailer) is a prefabricated structure, built in a factory on a permanently attached chassis before being transported to site.
Used as permanent homes, for holiday, temporary accommodation, staff accommodation and emergency housing they are left often permanently or semi-permanently in one place, but can be moved.
When a home arrives in two sections, it is typically called a ‘twin unit’.