Hightop:  A panel van (delivery van) often elegantly converted with a special high fixed roof.  The 'wheelbase' of the van chassis has a strong influence on available space since the internal width is more or less fixed.  Long wheelbase chassis give the most space but can be unwieldy to drive.  Medium wheelbase is quite popular on newer vans but MWB is not available on older vehicles.  Often known as a 'camper' or 'campervan' or Dormobile after an original manufacturer or even the very old-fashioned "caravanette".

Rising roof:  A variant of the above with a 'folding roof' to lower the overall profile.  Also known as a 'pop-top'.  Has obvious advantages when driving but there are some problems with insulation and water ingress.  

Coachbuilt / C-Class:  An extended chassis on a van cab with a coachbuilt living space,  rather like having a high spec caravan on the back.  The wider 'caravan' body allows designers to cleverly incorporate almost everything you could need into a quite small space - even cross-body beds big enough for a six footer. Frequently called a 'motorcaravan'. Also known as a C-Class in the UK.  Many have overcab beds in the 'Luton' but there are also 'low-profile' versions of these motorcaravans without the Luton over-cab space and sometimes with a lower roofline, these vans are much more economical on motorways due to their improved aerodynamics. 

A-Class or Integrated:  A medium or largish 'van completely coachbuilt - i.e. with nothing of the original van bodywork or cab exterior.  Potentially the best design since almost everything is based on the needs of motorcaravanners but they are usually rather expensive and historically not that popular in the UK though this is changing.  These days they are about 2.2 metres wide like the c-class coachbuilts and often have a transverse 'drop-down' double bed stored in the roof over the cab seats offering much more headroom than the Luton bed in a c-class.  Often only 3 berth.  Definitely the posh end of the market and usually referred to as a 'motorhome'.

RVs:  American motorhomes built in the style that only the Americans do!  Often very large with all mod cons including multiple air conditioning, on-board freezers and generators and with huge diesel or petrol engines that are very expensive to run in Europe - although many petrol versions have been converted to run on LPG.  Base vehicles are frequently coach type bodies but full A-Class versions exist too. 

Expedition Vehicles:  Monsters with survival at heart. The pinnacle is probably the Desert Challenger, 12 metres long with eight wheel drive, multiple body slide outs and weighing in at 30 tonnes, it takes 2400 litres of fuel, 2000 litres of water and cost a cool £1M - or thereabouts!

What's in a name?  Motorcaravan, Motor Caravan, Motorhome, Camper, Camping-car, RV, even Mo'van - what is the difference between them all?  The answer is none, they are all interchangeable - even if some groups prefer to use one or the other.  But I rather doubt that any A-Class owner would refer to their pride and joy as a 'camper'! European names might confuse the issue still further since many use 'fully integrated' and 'semi-integrated' for A & C Class 'vans with the result that foreign manufacturers sometimes adopt terms like 'B Klasse' and 'S Class' as names for their own model ranges - both these being called A-Class designs in the UK.  The Spanish and Italians differentiate the vehicle construction with names like Autocaravanna for the classic C-Class with a caravan built onto a chassis cab, while the French go for Profilé for a low profile C-Class.  The only universally accepted European name seems to be camping-car and Europeans usually translate that to 'camper' in English but we don't seem to accept that name here - all very confusing!

Search Terms    We used to use the term motorcaravan almost exclusively on this site but motorhome now seems to be more fashionable so in the interests of being found more in web searches we will use motorhome more too.