Difference between Scene and DynamicScene is not clear

## How can Bevy's documentation be improved?

Scene

>/// A composition of [`World`] objects.
///
/// To spawn a scene, you can use either:
/// * [`SceneSpawner::spawn`](crate::SceneSpawner::spawn)
/// * adding the [`SceneRoot`](crate::components::SceneRoot) component to an entity.

DynamicScene

>/// A collection of serializable resources and dynamic entities.
///
/// Each dynamic entity in the collection contains its own run-time defined set of components.
/// To spawn a dynamic scene, you can use either:
/// * [`SceneSpawner::spawn_dynamic`](crate::SceneSpawner::spawn_dynamic)
/// * adding the [`DynamicSceneRoot`](crate::components::DynamicSceneRoot) component to an entity.
/// * using the [`DynamicSceneBuilder`] to construct a `DynamicScene` from `World`.

It is not clear what is the difference between a Scene and a DynamicScene or what are their use-cases.