wedding ceremony vs nuptials

wedding ceremony and nuptials both are nouns.

Word	Noun	Adjective	Verb	Adverb
wedding ceremony	Yes	No	No	No
nuptials	Yes	No	No	No

As nouns, wedding ceremony and nuptials are synonyms defined as:

wedding ceremony and nuptials: the social event at which the ceremony of marriage is performed

Other synonyms of wedding ceremony include hymeneals, wedding.

wedding ceremony (noun)	nuptials (noun)
the social event at which the ceremony of marriage is performed	the social event at which the ceremony of marriage is performed