The closest Mormonism comes to the biblical concept of hell. (Mormons define hell differently. See: Hell.) Outer darkness is the abode of Satan, demons, and the sons of perdition. Many Mormons believe that only a handful of people will qualify as sons of perdition and thus go to outer darkness. Also see: Son of Perdition.
Dictionary of "Mormonese"
Stop talking past each other. Gain a better understanding of the words that are unique to Mormonism and the differences of shared terms between Mormonism and Christianity.