What's the difference between these 2 notations in windows?
2 Answers
One is a specific user, the other is a specific group. Users in the 'Administrator Group' will have the same rights as the 'Administrator' user itself. Windows needs an 'Administrator' user for a variety of processes. The Administrator is in the Administrator Group, though I believe that's more for notational convenience than actual rights inheritance.
administrator is a built in user account that is created by operating system bydefault and it has got full control on a specified system
but administrators is group that keep the information about the no of users and ih users can access the file and folder, and migrate the resources from on place to another place