What is the difference between String and string in C#? Are they different types?

Hello everyone! I recently started learning C# and one thing confuses me. In different code examples, I see strings declared differently: some write `string name = "John";`, while others write `String name = "John";`. Both work, IntelliSense doesn't complain. But aren't these different names? Maybe `String` is a class from .NET, and `string` is some primitive type? Or are they the same thing? I tried writing this code: ```csharp string a = "Hello"; String b = "World"; Console.WriteLine(a.GetType()); // System.String Console.WriteLine(b.GetType()); // System.String Console.WriteLine(a == b); // True ``` Both times it outputs `System.String`, and the comparison works. But if they are the same, why have two names? Maybe there is some difference in performance or