millenarianism vs chiliasm

millenarianism and chiliasm both are nouns.

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

As nouns, millenarianism and chiliasm are synonyms defined as:

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

Other synonyms of millenarianism include millenarism, millenniumism.

millenarianism (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