Witch
A woman believed to practice black magic is called a witch.
A witch.
Magic Johnson
Voodoo
Yes, there are people who practice some form of magic or magic based spiritual system and who call themselves wizards in practice today.
There are multiple answers to this question. For example, a magician studies performance magic- magic that is not real, but instead simply an illusion. Here are more names for real magic practitioners that you might find in a fantasy themed book:Mage (this isn't very commonly used, but its defenition is: a magician)Wizard (WAY more common, but mostly someone who uses spells rather than natural powers)Witch (by the loosest defenition, witches DO practice magic, but they are very stereotyped- the defenition of witch is: a person, now especially a woman, who professes or is supposed to practice magic, especially black magic or the dark arts)Sorcerer/Sorceress (a sorcerer, very literally, is a witch that practices more conjuring than simply potions and black magic)I hope that this is helpful!
Practice.
practice
Certainly there is. In fact there really isn't such a thing as "Black" magic. Magic itself is just power, we don't call it "bad" electricity or a "bad" car. It is the practitioner and their ethics, the manner in which the power is drawn and used that determines its polarity.
You can call her a widow, or you can say she is in mourning.
There are various terms that can be used to describe a woman who is supposed to have magic powers. She could be called a witch (in Spanish, bruja), a sorceress, an enchantress, or in New Age parlance, a psychic. If you don't believe that she actually has magic powers you could also call her a fraud or a charlatan.
A black widow