I\'ve read many articles, including this one, yet I can\'t still figure out what\'s the difference, and they have not explained it either in simple terms or at all.
Can
I'm not inventing anything here. Just copy-pasting the definitions from https://www.microsoft.com/net/download
The software development kit (SDK) includes everything you need to build and run .NET Core applications, using command line tools and any editor (including Visual Studio).
The runtime includes just the resources required to run existing .NET Core applications. The runtime is included in the SDK.