Navigation represents a list of links that either take the user to another page or parts of the page the user is in.
About Vertical Navigation
Radio Group Variant
The radio group variant should be used when your vertical navigation acts as a selection or filter on content, like within a modal. If the vertical navigation takes the user to another page or part of a page, use the standard List version. If your content changes entirely whenever options in the navigation are selected, instead of filtering one master list, then use the Vertical Tabs component.