infernal vs Hadean

infernal and Hadean both are nouns.

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

infernal (noun)	Hadean (noun)
an inhabitant of Hell	the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life

infernal (adjective)	Hadean (adjective)
being of the underworld	of or relating to or characteristic of Hades or Tartarus
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