Hell vs infernal region

Hell and infernal region both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hell	Yes	No	No	No
infernal region	Yes	No	No	No

As nouns, Hell and infernal region are synonyms defined as:

Hell and infernal region: (Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment

Other synonyms of Hell include Inferno, nether region, perdition, pit.

As nouns, Hell and infernal region are synonyms defined as:

Other synonyms of Hell include Hades, netherworld, Scheol, underworld.

Hell (noun)	infernal region (noun)
(Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment	(Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment
(religion) the world of the dead	(religion) the world of the dead