Soul Bound Weapons, Artifacts and the Likes

Soul Bound Weapons: Soul Bound Weapons are weapons which are bound to a being's soul or Core, meaning only that being can wield it.

Soul Bound Artifacts: Essentially the same as a Soul Bound Weapon, except that this could be armor or an accessory. Something that isn't a weapon in short.

Soul Forged Weapons/Artifacts: They are usually Soul Bound, no, it's not just extremely, but impossibly rare to find one that isn't Soul Bound. Why? Because a being must use their very being to forge one! They could create an extra Core and use that to forge one. This method creates Life or something similar, thus giving them personalities and turning them into sentient beings. Most High Levelled Deities prefer using Soul Forged Weapons and Artifacts, Dominus included. (A Zanpakuto from Bleach would come very, very close.)