Visual Studio Code has absolutely nothing to do with Visual Studio. Both are used to edit code.
.NET Core is a ground up rewrite of .NET and was released alongside the original .NET, which was renamed .NET Framework to distinguish it. Both can be equally considered to be "frameworks" and "core" to things. They then renamed .NET Core to .NET.
And there's the name .NET itself, which has never made an iota of sense, and the obsession they had with sticking .NET on the end of every product name for a while.
I don't know how they named these things, but I like to imagine they have a department dedicated to it that is filled with wild eyed lunatics who want to see the world burn, or at least mill about in confusion.
Anyone remembers the "Windows Live" brand everywhere in the early 2000s?
> they have a department dedicated to it that is filled with wild eyed lunatics who want to see the world burn, or at least mill about in confusion.
That's the marketing department. All the .NET stuff showed up when the internet became a big deal around 2000 and Microsoft wanted to give the impression that they were "with it".
Don't forgot .net Standard which is more of a .net Lowest Common Denominator.
For naming, ".net" got changed to "Copilot" on everything now.