WordNet sense 1 (any place of pain and turmoil):

hellhole, inferno, hell on earth, the pits, snake pit

WordNet sense 2 (a cause of difficulty and suffering):

blaze

WordNet sense 3 ((Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment):

perdition, pit, nether region, infernal region

WordNet sense 4 ((religion) the world of the dead):

netherworld, underworld, Hades, Hel, Scheol, hades

WordNet sense 5 (violent and excited activity):

sin, sin