This is indeed true, Audrey.
It wasn’t just in primitive tribes either. In mediaeval villages, the “witch” was often just a herbalist woman who provided natural remedies to the villagers. Some modern medicines are still made from these, e.g. aspirin from willow bark.
Magic is indeed anything we don’t understand. If Renaissance people could only see the way we keep in touch by mass telecommunications today; they would be making the sign against the evil eye, and freaking out about WITCHCRAFT!
Also, in Greek mythology there were 9 muses, all the daughter of Zeus and Mnemosyne. They were Calliope, Clio, Euterpe, Erato, Melpomene, Polyhymnia, Terpsichore, Thalia and Urania – all representing a different art.