vodoun vs religious cult

vodoun and religious cult both are nouns.

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

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

vodoun: 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 vodoun include cult, cultus.

vodoun (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