It's an easy trap to fall into: 'motorhome', 'campervan' and 'caravan' get used as if they're interchangeable, but they describe three genuinely different setups - and picking the right one matters for cost, convenience and how you'll actually use it.
A campervan is usually a van conversion - a Volkswagen Transporter, Ford Transit Custom or similar, converted internally with a bed, small kitchen and seating, but built on (and driven as) a single vehicle. You park it, sleep in it, and drive it to the shops the next morning without unhitching anything.
A motorhome is a larger, purpose-built or coachbuilt vehicle - everything from a compact panel-van conversion up to a full A-class 'bus' style vehicle with an overcab bed. Like a campervan, it's one vehicle, but with considerably more living space, and usually a fixed washroom, separate kitchen and dedicated bedroom.
A caravan, by contrast, isn't a motor vehicle at all - it's a trailer, towed behind a separate car. This means you can leave the caravan pitched up and use the car independently, which campervans and motorhomes can't easily do without a motor mover or towed car.
Which suits you?
If you want something compact enough to use as an everyday vehicle as well as a weekend escape, a campervan is usually the better fit. If you want proper separate living spaces, a fixed bed and more storage, and don't mind driving a larger vehicle, a motorhome makes more sense. And if you'd rather keep a normal car for daily use and only tow the accommodation when you're actually going away, a caravan is worth serious consideration.
There's no universally right answer - it comes down to how often you'll use it, how you'll use it, and how comfortable you are driving (and parking) something larger.