A motor ship is like a big car that can ride on water. It has a really strong engine, just like a car, that makes it move through the water. But instead of wheels, it has big propellers that spin and push the ship forward.
Motor ships are often used for carrying things from one place to another, just like a big truck. They can carry cars, containers, food, or even people on vacation. Some motor ships are so huge that they have lots of rooms inside where people can sleep, eat, and relax.
To control a motor ship, there are people called "captain" and "crew" who make sure that everything runs smoothly. The captain steers the ship and makes sure it goes where it's supposed to go. The crew takes care of the ship and helps the passengers if they need anything.
Overall, a motor ship is like a really big car that can go on water, and it's used for carrying lots of things and people around.