Difference between fragment and FragmentContainerView tags?

Question

Android

All the time it is highlighted in yellow, and I do not understand why I should change the simple fragment tag to FragmentContainerView. What are their differences?

Answer 1

The main difference is that FragmentContainerView will allow you to dynamically replace fragment at runtime while fragment will not.
And from this it already dances, there are all sorts of bells and whistles about the z-order to draw during the animation in the correct order.
PS fragment is really a tag, and FragmentContainerView is exactly a view, an analogue of FrameLayout.