1) Magic 2) Sorcery 3) Sorcery, to some 4) Witchcraft 
• The art practiced by conjurers and witches; necromancy; conjuration; magic.
Conjuring technique of concealing objects using black covers against a black background. Also used by fraudulent mediums.
Conjuring technique of concealing objects using black covers against a black background. Also used by fraudulent mediums.
The use of a black cloth background to aid in concealing or highlighting objects.
Black' art` The art practiced by conjurers and witches; necromancy; conjuration; magic. » This name was given in the Middle Ages to necromancy, under the idea that the latter term was derived from niger black, instead of 
Black art was old slang for printing.
[Wuthering Heights] witchcraft.
witchcraft; magic.