There is nothing special about command-methods. They are nothing more than the methods found in
ConsoleCommands. With that said, they do have a particular characteristic beyond the average method. They double-up as the commands the end-user enters in the console's prompt. From your point-of-view, though, they are normal methods - like any other. I call them "Command-Methods" to help separate your code from Console.Waterworks.Core -- that's all. If you prefer to call them methods (or functions), please do.
Here is a diagram to help show the "position" of the command-methods within the project.