It's maybe simple but I think about this every time I build a new application.
How do you name the class for the current user of the application and for the orm class of the user table?
Usually I have something like
- CurrentUser: Logged-in user, stored in session, info for last activity etc
- User: ORM Class (C# EF CodeFirst, but it doesn't matter)
And yes, they could have the same name in different namespaces, but I don't really like that.