Deviance is violation of norms. It is breaking the norms of society, social manners and code of conduct in business and mutual agreements between the parties. It is against the social manners of family and marriage. It is the breaking of promise and breaking the law of state like committing crimes. Any violation of norm is Deviance. It is natural that man deviates from norms.
All the various forms of social norms are instruments of social control in varying degrees. The social usages, folkways regulating our behaviour, are called mores. The folkways and mores have the same source of their emergence and it is group interaction. Both are the customary ways of life and are standards of right and wrong. The people seek direction of their actions by learning these norms in group life.
Man's action repeated by him is his habit and a repeated behaviour by a group of people is a custom. More specifically, the socially approved ways of acting are the customs of the society. These customs develop during the way of our daily life and we conform to them consciously and unconsciously, Because they have become an important part of our behaviour, These very customs when regularized by our repeated behaviour,
Social norms, informal ones, develop-automatically, by and by during social processes. We are conscious about their existence when we find ourselves in need of them. These are latently working among common man interrelationship and seldom the members conscious are about them. Their emergence differs in nature and degree of intensity from group to group according to group value.
Social norms are the shared expectations of group members in a social situation, while culture norms are the ideally expected manners of behaviour. The given 'social situation' is created when the interaction processes work among the members. In such a situation how the initiator starts his interaction and what the receiving members expect from the initiator, are the roles defined by social norms.
Cultures are the product of human society, and it saves its culture by changing and transmitting to the next generation. Culture and society are counterparts like the two faces of a sheet of paper. It is secondary to society and is the man made part of environment. It is universal for human experience. It is dynamic because completely static cultures are dead ones but they don’t exist in contemporary societies of the world.
Summer defined ethnocentrism as "that view of things in which ones' own group is the center of everything and all others are scaled and rated with reference to it. From this definition, Horton and Hunt deduce that it is the habit of every group of taking for granted the superiority of its culture.
The people within their contact second to the primary group form secondary group no matter whatever the type of relationship is there. Sometimes they are also special interest group. The intimacy within the group is relatively lower than that in primary. The relations of teacher and student, buyer and seller, voter and candidate, are secondary.