There is a convention that Hook functions should always be prefixed with use, followed by the Hook name starting with a capital letter; for example: useState, useEffect, and useResource. This is important, because otherwise we would not know which JavaScript functions are Hooks, and which are not. Especially when enforcing the rules of Hooks, we need to know which functions are Hooks so that we can make sure they are not being called conditionally or in loops.
As we can see, naming conventions are not technically required, but they make life a lot easier for developers. Knowing the difference between normal functions and Hooks makes it very easy to automatically enforce the rules of Hooks. In the next section, we are going to learn how to automatically enforce the rules using the eslint tool.