wedding vs ritual

wedding and ritual both are nouns.

Word	Noun	Adjective	Verb	Adverb
wedding	Yes	No	No	No
ritual	Yes	Yes	No	No

As nouns, ritual is a hypernym of wedding; that is, ritual is a word with a broader meaning than wedding:

Other hypernyms of wedding include rite.

wedding (noun)	ritual (noun)
the act of marrying; the nuptial ceremony	any customary observance or practice
the social event at which the ceremony of marriage is performed	the prescribed procedure for conducting religious ceremonies
a party of people at a wedding	stereotyped behavior

wedding (adjective)	ritual (adjective)
	of or relating to or employed in social rites or rituals
	of or relating to or characteristic of religious rituals