The legal union between a man and a woman is referred to as
The legal union between a man and a woman is referred to as
Explanation
Marriage is the legal union recognized by law between two people. It creates legal rights and responsibilities for both partners.
Legal marriage requires official documentation and government registration. This differs from informal relationships which have no legal standing.
Dating is casual. Engagement is a promise to marry. Cohabitation is living together. Only marriage is the legal union between partners.