Remarriage is the noun for marrying again after a marriage has already ended — by death or by divorce — or for that new marriage as a fact. People talk about someone's remarriage, the chance of remarriage, a remarriage later in life. The verb is remarry; this word is the event or the state, not the action in progress. Law, news, and family talk all use it. Though actually, it does not tell you why the first marriage ended; you need extra words for that. In some families it is ordinary; in others it still carries a hush. The word itself stays calm and neutral. It is also not the party: the party is a wedding. Remarriage is the fact of being married again.