wedding vs wedding ceremony

wedding and wedding ceremony both are nouns.

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

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

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

Other synonyms of wedding include hymeneals, nuptials.

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