dead person vs infernal

dead person and infernal both are nouns.

Word	Noun	Adjective	Verb	Adverb
dead person	Yes	No	No	No
infernal	Yes	Yes	No	No

As nouns, infernal is a hyponym of dead person; that is, infernal is a word with a more specific, narrower meaning than dead person:

Other hyponyms of dead person include living dead, zombi, zombie.

dead person (noun)	infernal (noun)
someone who is no longer alive	an inhabitant of Hell

dead person (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