remarriage vs marriage

remarriage and marriage both are nouns.

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

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

Other hypernyms of remarriage include marriage ceremony, wedding.

remarriage (noun)	marriage (noun)
the act of marrying again	the act of marrying; the nuptial ceremony
	two people who are married to each other
	the state of being a married couple voluntarily joined for life (or until divorce)
	a close and intimate union