The word rear can mean different things. When we talk about the rear of something, we’re usually talking about the back part. Think about a car. The rear of the car is where the trunk is, not where the driver sits. It’s like the car’s backpack, where you can put things you want to carry with you.
Another way to think about rear is like when you have a toy train. The rear of the train is the last car, the one that follows all the others. If you are playing with a group of toy animals, the one at the rear is at the end of the line.
Rear can also mean to raise or take care of something. Imagine you have a plant, and you give it water and sunlight. You are helping it grow, or you are rearing it. Just like how your parents take care of you, making sure you eat, sleep, and play, they are rearing you, helping you grow big and strong.