cultus vs vodoun

cultus and vodoun both are nouns.

Word	Noun	Adjective	Verb	Adverb
cultus	Yes	No	No	No
vodoun	Yes	No	No	No

As nouns, vodoun is a hyponym of cultus; that is, vodoun is a word with a more specific, narrower meaning than cultus:

cultus: a system of religious beliefs and rituals
vodoun: a religious cult practiced chiefly in Caribbean countries (especially Haiti); involves witchcraft and animistic deities

Other hyponyms of cultus include cargo cult, macumba, obeah, obi, Rastafarianism, hoodooism, voodoo, voodooism, sabianism.

cultus (noun)	vodoun (noun)
a system of religious beliefs and rituals	a religious cult practiced chiefly in Caribbean countries (especially Haiti); involves witchcraft and animistic deities