Variables become component properties

When we refer to components, we are basically referring to the available functions of a GameObject, for example, the human body has many functions, such as talking, moving, and observing. Now let's say that we want the human body to move faster. What is the function linked to that action? Movement. So in order to make our body move faster, we would need to create a script that had access to the movement component and then we would use that to make the body move faster. Just like in real life, different GameObjects can also have different components, for example, the camera component can only be accessed from a camera. There are plenty of components that already exist that were created by Unity's programmers, but we can also write our own components. This means that all the properties that we see in Inspector are just variables of some type. They simply store data that will be used by some method.