What's the difference between Warlock, Sorcerer and Wizard?

[JadedDM]

Completely removing the D&D context, they more or less all mean the same thing in laymen's terms. Warlock/Witch has a more negative connotation, usually more associated with evil or dark arts, while wizard and sorcerer are more neutral terms. But in English, they all three are completely interchangeable. In fact, back before 3E, wizard, mage and sorcerer all meant the same thing in D&D, too.