nether region vs infernal region

nether region and infernal region both are nouns.

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

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

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

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

nether region (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