A tiny house is basically a tiny home build just like a site built home but in smaller size and it's usually on wheels such as built on a trailer.
Then you can pull the tiny home on wheels to a new destination when you want too and can usually easily pull the tiny house behind a regular truck or other vehicle without needing to hire a mobile home mover.
Tiny homes are usually meant to be pulled and moved every so often and not as often as a camper trailer is.
A camper trailer is also a small home on wheels but is made to be towed down the road often and has better aerodynamics to it to allow for the most fuel efficiency of your vehicle.
A camper trailer comes in several different sizes and they are not usually made to live in full time while a tiny home is designed to be lived in full time if you want too.
Although some people do live in camper trailers full time so it can be done.
But a camper trailer is not as heavy as a tiny house is and is made to be pulled from one place to another more often.