millenniumism vs millenarism

millenniumism and millenarism both are nouns.

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

As nouns, millenniumism and millenarism are synonyms defined as:

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

Other synonyms of millenniumism include chiliasm, millenarianism.

millenniumism (noun)	millenarism (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