eternal torment

can someone give me the terms and definitions used in OT and NT for hell and salvation? and a few of the places those particular words are used? i have read quite a few discussions on this forum and would like to have a little better understanding of the words that are actualy used - contextually of course.

Those of us who are Fox News fans and were aware of the capture of Steve Centanni and Olaf Wiig who work as journalists for Fox were relieved to find out that both men were released by their terrorist captors in the Gaza Strip and are now alive and well and perhaps on their way back to the United States. While their ordeal was certainly scary and traumatic, it was revealed that as some point during their ordeal they were “converted to Islam at gunpoint” and this is something that is relevant to our Christian faith as well.