wedding vs ceremonial

wedding and ceremonial both are nouns.

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

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

Other hypernyms of wedding include ceremonial occasion, ceremony, observance.

wedding (noun)	ceremonial (noun)
the act of marrying; the nuptial ceremony	a formal event performed on a special occasion
the social event at which the ceremony of marriage is performed
a party of people at a wedding

wedding (adjective)	ceremonial (adjective)
	marked by pomp or ceremony or formality