cultus vs voodoo

cultus and voodoo both are nouns.

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

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

cultus: a system of religious beliefs and rituals
voodoo: 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, vodoun, voodooism, sabianism.

cultus (noun)	voodoo (noun)
a system of religious beliefs and rituals	a charm superstitiously believed to embody magical powers
	a religious cult practiced chiefly in Caribbean countries (especially Haiti); involves witchcraft and animistic deities
	(Haiti) followers of a religion that involves witchcraft and animistic deities

cultus (verb)	voodoo (verb)
	bewitch by or as if by a voodoo