Inferno vs infernal

Inferno and infernal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Inferno	Yes	No	No	No
infernal	Yes	Yes	No	No

Inferno (noun)	infernal (noun)
(Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment	an inhabitant of Hell

Inferno (adjective)	infernal (adjective)
	being of the underworld
	characteristic of or resembling Hell
	of or pertaining to or characteristic of a very uncontrolled and intense fire
	expletives used informally as intensifiers
	extremely evil or cruel; expressive of cruelty or befitting hell