Kuiper belt and Oort cloud are two aspects of the solar system. The Oort cloud goes by this name because it looks like a cloud. However, it is not a cloud. It is so large that it can be directly from the sun by three light-years. As the Oort cloud is shaped circular and like a sphere, the Kuiper Belt has a disc-like shape. Another difference between them is the components that make up these aspects of the solar system. The Kuiper belt is made of icy comets. These comets were meant to orbit Earth before they became the belt. The Oort cloud is made of icy planetesimals.
A lot of people do know that there are so many things that can still be seen in the solar system. For example, there is the Oort Cloud which looks similar to a cloud but is not actually a cloud. This is large enough that it can be three light-years from the sun. This is different from the Kuiper Belt.
The shape of the Oort Cloud and the Kuiper belt is different. The Oort cloud will be somewhat shaped like a sphere while the Kuiper Belt will be shaped like a disc. The components of the Kuiper belt will also be different. This will usually be made out of different icy comets that are meant to circle the earth.