Windows are where your running applications are displayed.

In the Activities overview, the dock is where your favorite applications and your running applications are shown. The glow behind an application name indicates if the application is running.

Clicking on the application icon will launch it if it is not running, and will open the last used window of that application if it is already running.

Right clicking on the application icon for a running application will bring all windows for that application forward. A menu with the titles of your windows will be displayed. You can select a window from this menu. It also provides options to open a new window for that application and to remove or add that application to favorites depending on its current status.

Windows are shown on their corresponding workspaces.