Home(The default tab on the ribbon interface that provides the basic features that users need most frequently for each application); Start(The Windows home screen and replacement for the Start menu, which includes apps, websites, and other info that users can specify and customize)
startup(The process of starting or resetting a computer. When first turned on (cold boot) or reset (warm boot), the computer runs the software that loads and starts the computer's operating system, which prepares it for use)