The term 'underworld' is used to refer to a variety of different realms, often associated with the afterlife. TARTARUS, an 8-letter word, is a deep ABYSS in Greek mythology, located beneath the underworld and used as a dungeon of torment and suffering for the wicked. NETHERWORLD, an 11-letter word, is another term for the underworld, particularly in Hinduism and Buddhism. ABYSS, a 5-letter word, is a bottomless pit, often used to describe the underworld in religious texts. MAFIA, a 5-letter word, is a term used to refer to organized crime syndicates, which are often referred to as the underworld. Gangland, an 8-letter word, is a term used to refer to the criminal underworld. HELL, a 4-letter word, is a place of punishment for the wicked in many religions, often associated with the underworld. HADES, a 5-letter word, is the ruler of the underworld in Greek mythology. Sheol, a 5-letter word, is the underworld in Jewish and Christian traditions.