A brother is an adult male who shares at least one parent with another person. The female equivalent is a sister. Although the word traditionally refers to a familial relation, it can be used more comfortably to describe non familial relationships as well. In most cases, a full brother is at least a first degree relation. The degree of the relationship determines the rights and responsibilities that are associated with the relationship.
The younger brother is usually fond of older brothers and helps them in their various tasks such as learning new things, cooking, and other similar activities. He also looks up to him and respects his authority. On the other hand, a younger sister will value her brother and will try to follow his example. She might follow her brother’s decision in regard to getting married or choosing a career path.
While there are many roles that the brother can fill in a family, the most prominent is that of a confidant or a back up. He will generally act as a counselor to his fellow members of the family especially during stressful times. He will also encourage his siblings to have faith in their father or mother and to do their best.
One thing to remember is that although the elder brother is the one who is formally called “big brother”, he is not entitled to all the privileges and advantages that the younger brother has. He is only required to support his younger sibling in his duties and in most cases his younger brother will not be required to pay the expenses of his brothers. But this does not mean that the brother cannot become his equal or have a say in various decisions. He just may not be granted the right to have more power or say in family matters because of his age.
Although technically a male person, the brother cannot legally be considered a brother until he has married. If he is already married, then the child is half-brother anyway because of marrying to a woman while still a child of his brothers. This happens if the marriage is not recognized by the country where he was born. Some countries also consider a child to be a brother if the parents want him to be so but if the child is adopted or comes from another country then he would technically be considered only a junior member of his family.
Since the institution of brotherhood is mostly intended for the benefit of all the brothers, the idea of having a little brother who can help his brothers and is accepted fully as a full brother would encourage these sons to participate more in the family business or activities. A junior member is encouraged to be a good example to his fellow members, especially when it comes to religious matters. It is in a way like encouraging a son to get involved in his church. The child will learn to have strong religious convictions when he is still a junior member and is then eligible for becoming a full-fledged brother.