millenniumism vs chiliasm

millenniumism and chiliasm both are nouns.

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

As nouns, millenniumism and chiliasm are synonyms defined as:

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

Other synonyms of millenniumism include millenarianism, millenarism.

millenniumism (noun)	chiliasm (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