To apply different element styles and properties, which you can change in the builder interface on the "Styles" and "Props" panels.
See more in the Overrides section.
To apply different styles and properties for different states in an element. For example, for an open or closed menu, a second list item, etc.
See more in the How to Create an Override List section.
Specify the name of the component from which you want to get the props list in the "kind" property.
The "kind" property allows you to get a list of component properties displayed on the builder front panel. You can specify any name, but if a component with that name doesn't exist in the project, the props list for it will be empty.