Manichaeism vs Manichaean

Manichaeism and Manichaean both are nouns.

Word	Noun	Adjective	Verb	Adverb
Manichaeism	Yes	No	No	No
Manichaean	Yes	Yes	No	No

Manichaeism (noun)	Manichaean (noun)
a religion founded by Manes in the third century; a synthesis of Zoroastrian dualism between light and dark and Babylonian folklore and Buddhist ethics and superficial elements of Christianity; spread widely in the Roman Empire but had largely died out by 1000	an adherent of Manichaeism

Manichaeism (adjective)	Manichaean (adjective)
	of or relating to Manichaeism
	of or relating to the philosophical doctrine of dualism