There is the slight difference, that buffers are directly accessible for the user, while other editors only indirectly let you use the in-memory-data. So, what

There is the slight difference, that buffers are directly accessible for the user, while other editors only indirectly let you use the in-memory-data. So, what VS Code calls an editor, is in Emacs a window, not the buffer. This subtle difference becomes relevant for example when working with multiple views on the same buffer. In VS Code, those views are only getting synced when it's a file on space. But open a new editor without an associated file, and every new view on that content, will become an independent copy.