Sometimes you have a Character Guide for Lost Omens (at least for Tian Xia) that is basically the mechanical side of things, focused on classes. Some books are also quite mixed; Dark Archives is full of mechanics and character options but also a bunch of mini-adventures, all built around a...
Gotcha, thanks. That certainly fits into 5E's writing style.
I think it's fair to say that 5E is not going to introduce a greater variety of supernatural concepts - or even be more specific about what exists - as that is not 5E's design philosophy. However, those distinctions do exist outside...
You're using a colloquial definition, but other usage narrows magic down as a subset of the supernatural. Supernatural is the broader term, even though they are often used interchangably.
Depends on the culture. The world is very, very big, and humanity has come up with pretty much any variation you could hope to imagine. Journey to the West alone is a bunch of different belief systems directly interacting and sometimes punching each other.
It's more the other way around. Everything was just a normal part of the world until we started dividing it up and figuring out some of it was wrong. Aspirin is a Relieve Pain potion etc.
We're talking about psionics in D&D, not the specific "psychic" culture of the Western world which was itself also inspired by non-Western sources.
Psionics is a mish-mash of borrowed ideas that includes things from religions, philosophies, occult practices, and scammy magicians from around...
I could go on a big ol' rant on descriptive terms vs. technical accuracy (birds are fish etc.) but at the end of the day this is fiction so there can be magic, schmagic, and magyk and they could do the exact same thing and can be defined as completely different things. None of this has a truth...