restore

Use as a verb instead of undelete to describe restoring an item that was deleted.

Use as a verb to describe restoring an item or condition to its previous state, such as a window that was previously maximized or minimized.

Don't use as an adjective or as a noun in content for a general audience unless you need to match the UI.

Examples
Restore the file.
Restore the window to its minimized state.
For more information about System Restore ....

For content about SQL Server:

• Use restore to describe restoring a series of one or more database backups.
• Use restore as an adjective only when necessary.

Examples
Under the full recovery model, first restore one or more data backups, and then restore the subsequent log backups to roll the database forward in time.
Restore the database.
Use the RESTORE statement to specify the restore operation.