Wedding ceremony can be directly called wedding ceremony, which is a kind of wedding custom. Wedding ceremonies usually include the groom personally going to the woman's house to marry the bride, taking her out of the house, holding a short ceremony with her parents and so on.
It is a wedding custom to see the bride off. When a daughter gets married, her relatives and friends can see their friends off and give them some greetings on the wedding day. The customs of each place are different, and the etiquette of sending the bride is also different.
The biggest difference between them is that one is to get married at home and the other is to send the woman to get married.