Spell book and spells of magic with real practitioners consider spells which fight against, or try to manipulate free will as black magic spell in united kingdom. Because these spells try to influence the normal life of others they can become pretty dangerous if they backfire. Free will is considered by some as the strongest force in nature so care should definitely be taken when dealing in the dark arts.
The line between what can be considered back magic spells in UK is fuzzy though. Love spells in Georgia are rarely seen as black magic, but if the spell makes someone leave their spouse and travel across the country to be with you you are defiantly messing with free will. However, a simple crush spell to get a date doesn't really mess with their free will. No matter how you decide to define black magic, the following are generally considered as black magic spells.
Death Spells, Hurt Spells, Resurrection Spells, Banishing Spells, Binding Spells, Conjuring Spells, Energy Spells, Nightmare Spells, Power Spells, Revenge Spells, Bad Luck Spells, Misfortune Spells, love spells, voodoo spells, divorce spells, marriage spells, reunite lover spells, native doctor, native healers, traditional healers, fertility spells, traditional doctors,