A countertop is like a table that goes on top of cabinets in a kitchen or bathroom. It's a flat surface that people use to do things like cut food, place dishes, or put on makeup. Countertops can be made from different materials, like wood, stone, or plastic, but they all serve the same purpose - to give us a place to work or put things on. So just like how you have a desk to do your schoolwork on, grown-ups have a countertop in their kitchen or bathroom to do things like cooking or getting ready in the morning.