Hell vs nether region

Hell and nether region both are nouns.

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

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

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

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

Hell (noun)	nether 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