Every component we have seen so far can be called Stateless Function Component. They just receive an input as props and return an output as JSX: (props) => JSX. The input, only if available in form of props, shapes the rendered output. These kind of components don't manage state and don't have any side-effects (e.g. accessing the browser's local storage). People call them Functional Stateless Components, because they are stateless and expressed by a function. However, React Hooks made it possible to have state in Function Components.

Stateless Vs Statefull