voodooism vs religious cult

voodooism and religious cult both are nouns.

Word	Noun	Adjective	Verb	Adverb
voodooism	Yes	No	No	No
religious cult	Yes	No	No	No

As nouns, religious cult is a hypernym of voodooism; that is, religious cult is a word with a broader meaning than voodooism:

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

Other hypernyms of voodooism include cult, cultus.

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