Bottom navigation bars allow movement between primary destinations in an app.
Bottom navigation bars display three to five destinations at the bottom of a screen. Each destination is represented by an icon and an optional text label. When a bottom navigation icon is tapped, the user is taken to the top-level navigation destination associated with that icon.
When there are only three actions, display both icons and text labels at all times.
If there are four or five actions, display inactive views as icons only.