eon vs Hadean

eon and Hadean both are nouns.

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

eon (noun)	Hadean (noun)
(Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe	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
an immeasurably long period of time
the longest division of geological time

eon (adjective)	Hadean (adjective)
	of or relating to or characteristic of Hades or Tartarus