An area is a part of any surface. Areas are usually separated from everything around them by some kind of boundary, such as a fence or a line drawn around them on a piece of paper.
Area also describes the total size of that area. Different shapes have different formula for calculating how big they are.
A crosswalk is a marked place where people can safely cross a road. It helps drivers know where to expect people on the road.
Crosswalks are usually found near schools, parks, and busy streets. They may have white lines on the ground, signs, or traffic lights. Some crosswalks have buttons for pedestrians to change the light.
