Bounded domain

A bounded domain is like a playground with a fence around it. Just like the fence keeps you inside the playground, a boundary keeps things inside a certain area. In math, a bounded domain is a region or space where all the points are kept inside a boundary, just like how everything inside a playground fence is contained within the playground. This boundary could be a set of points or even a line that goes around the area. Think of it like a protective barrier around a certain space, keeping everything neat and contained.