Meaning of Brothers and Sisters Group in AD

I was on msn with WS and we decided to find out more about the terms used in Brother and Sister group. Kinda interesting to know that the term "brother" and "sister" group does not exist! Cos they have exact terms and title to each role. Some of the interesting facts from wikipedia:

In North America, the bride might have several bridesmaids, but the Maid of Honor is the title and position held by the bride's chief attendant, typically her closest friend or sister. If married, the title Matron of Honor is used.

 

 

A bridesmaid is a girl or young woman who attends to the bride during or after a wedding or marriage ceremony. Traditionally, bridesmaids were chosen from unwed young women of marriageable age.
The Western bridesmaid tradition seems to have originated from later Roman law, which required ten witnesses at a wedding in order to outsmart evil spirits believed to attend marriage ceremonies. The bridesmaids and ushers dressed in identical clothing to the bride and groom, so that the evil spirits would not know who was getting married.
Commonly recited expressions about this member of the wedding party are "always a bridesmaid, but never a bride" and "thrice a bridesmaid, never a bride"-- an old charm that can be broken by being a bridesmaid seven times.

 

The best man is the name given to the chief male assistant to the bridegroom at a wedding. Usually the groom extends this honor to someone who is close to him, generally either a brother or his closest male friend. Alternatively, should one of the groom's male friends have been directly responsible for introducing the groom to his bride (or otherwise responsible for bringing them together), the honor of best man might be extended to him in gratitude.

 

 

In a North American/Australian or British wedding a groomsman or usher is one of the (usually) male attendants to the bridegroom in a wedding ceremony. Usually the groom selects his closest friends and/or relatives to serve as a groomsmen, and it is considered an honor to be selected.