Question : Users/Authenticated Users /Domain Users

I would like to know much about the difference between the following groups, especially between Authenticated users and domain users.
I pasted the definitions from this site:http://www.ss64.com/ntsyntax/security_groups.html

Authenticated Users:    A group that includes all users whose identities were authenticated when they logged on. Membership is controlled by the operating system.
Domain Users :   A global group that, by default, includes all user accounts in a domain. When you create a user account in a domain, it is added to this group automatically.
  Users :   A built-in group. After the initial installation of the operating system, the only member is the Authenticated Users group. When a computer joins a domain, the Domain Users group is added to the Users group on the computer. Users can perform tasks such as running applications, using local and network printers, shutting down the computer, and locking the computer. Users can install applications that only they are allowed to use if the installation program of the application supports per-user installation.  

Answer : Users/Authenticated Users /Domain Users

Domain users:  These users have privlages that allow them to login to computers that are members of the domain, as well as brows domain resources

Authenticated Users: I'm not sure about this one, but I beleive it is the users that have rights exclusivley on the local system (these rights have no affect on a domain and do not allow browsing the network)

Users:  Everyone who is a user is placed in this group by default.

If you are using a domain, the domain users group is automaticaly added to the Authenticated Users on each system that is a member of the domain.