.NET Core vs ASP.NET Core

Question

What exactly is the difference between .NET Core and ASP.NET Core?

Are they mutually exclusive? I heard ASP.NET Core is built on .NET Core, but it can also be built

Answer 1

I would like to add that there is something called middleware injection in .NET Core request pipeline. If implemented correctly this is very useful, as it can intercept application exceptions automatically and makes logging much easier (in one place instead of logging in every method).