Marriage is when two people make a promise to each other and become partners for life.
Marriage is often seen as a very special and important thing in many cultures.
Examples:
They had a big wedding and now they are in marriage.
In some places, people can't have marriage with someone of the same sex.
Marriage is a very old tradition.
My parents' marriage is older than I am!
In some stories, the prince and princess have a very special marriage.
Marriage is a big deal in many places around the world.