How is it I am able to create a new instance of interface Microsoft.Office.Interop.Word.Application

Question

According to the Word Interop documentation Microsoft.Office.Interop.Word.Application is an interface, yet I am able to create a new instance of it as follows

var application = new Microsoft.Office.Interop.Word.Application();

There's also an example of this on DotNetPerls. It's normally not possible to create instances of an interface in C#, so how is it possible here? Is this a feature of COM or dynamic types?

Answer 1

Because this is not C# interface but a COM interface. COM interfaces are represented in C# as interfaces with ComImport and Guid attributes.

[GuidAttribute("00020970-0000-0000-C000-000000000046")]
public interface Application : _Application, 
    ApplicationEvents4_Event