There are no concrete requirements for becoming a basketball player. Anyone can freely play the sport, whether you simply want to shoot some hoops in the backyard or have aspirations of one day having your own line of basketball sneakers and a million-dollar contract.
Pagan. A somewhat vague term derived from from the Latin word paganus. Pagan is a term which refers to a variety of different religions ranging from Wicca, to that of ancient Egypt and even Hinduism, among many others. Some Pagans are of no specific religion, but rather are eclectic.
We arrive thus at the following definition: A religion is a unified system of beliefs and practices relative to sacred things, that is to say, things set apart and forbidden -- beliefs and practices which unite into one single moral community called a Church, all those who adhere to them.