The following illustrations show Windows Phone screens and the various elements that appear on them.
For a general audience, use Start, rather than Start screen or Home screen to describe this screen.
For a developer audience, if necessary, you can use Start screen.
Use Tile to refer to objects on Start that the user can move around, such as the Phone Tile and the Calendar Tile. Tiles are shortcuts to apps or other content. Always capitalize Tile.
Use Live Tile to refer to a Tile that updates automatically and shows content updates on Start.
In procedures, use the name of the Tile, such as Messaging ...