Evil, unlike goodness, is so random. It strikes without pattern or aim… save for hurt and destruction. Evil is not pain, hurt, or loss… as long as suffering these is a process for gaining benefit or projecting healing or gaining knowledge, experience, or any other goodness as an outcome.
Evil is unpredictable like fire that consumes all, including its own self. Pure evil ruins and consumes all including the villain. One can not find an explanation or logic behind evil; thus evil is synonymy for darkness.
Evil is wickedness, immorality,racism, prejudice, betrayal, vice, iniquity, degeneracy, corruption, depravity, villainy, malevolence… as the devil is all evil.