marriage vs rite

marriage and rite both are nouns.

Word	Noun	Adjective	Verb	Adverb
marriage	Yes	No	No	No
rite	Yes	No	No	No

As nouns, rite is a hypernym of marriage; that is, rite is a word with a broader meaning than marriage:

Other hypernyms of marriage include ritual.

marriage (noun)	rite (noun)
the act of marrying; the nuptial ceremony	any customary observance or practice
two people who are married to each other	an established ceremony prescribed by a religion
the state of being a married couple voluntarily joined for life (or until divorce)
a close and intimate union