millenniumism vs millenarianism

millenniumism and millenarianism both are nouns.

Word	Noun	Adjective	Verb	Adverb
millenniumism	Yes	No	No	No
millenarianism	Yes	No	No	No

As nouns, millenniumism and millenarianism are synonyms defined as:

millenniumism and millenarianism: belief in the Christian doctrine of the millennium mentioned in the Book of Revelations

Other synonyms of millenniumism include chiliasm, millenarism.

millenniumism (noun)	millenarianism (noun)
belief in the Christian doctrine of the millennium mentioned in the Book of Revelations	belief in the Christian doctrine of the millennium mentioned in the Book of Revelations