remarriage vs wedding

remarriage and wedding both are nouns.

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

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

Other hypernyms of remarriage include marriage, marriage ceremony.

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