A wheelchair is a special chair that helps people who have difficulty moving around by themselves. It has wheels on the bottom and you sit in it just like any other chair. The wheels let you move yourself around without having to walk or stand up.
Sometimes people need a wheelchair because their legs or other parts of their body don't work properly. Maybe they were born that way or maybe something happened to them later. Whatever the reason, a wheelchair can help them get around and do things they might not be able to do otherwise.
There are different kinds of wheelchairs depending on what the person needs. Some wheelchairs can be pushed by someone else, while others are made for the person to move themselves around. Some wheelchairs are manual and you have to use your arms to move the wheels, while others are electric and have a motor to help you move around.
Wheelchairs might seem different from other chairs, but they're just a tool to help people with different needs. They're there to make sure that everyone can get around and do what they want to do, no matter what challenges they might face.