For example, in some cultures, interruptions in discussions are common (e.g. Brazil), in others, they are regarded as rude (e.g. Japan). So, different cultures have different communication system. In some societies people speak several major languages (e.g. in Switzerland people speak German, Italian and French). Within one language group there may be various dialects, slang, Jargons, or accents. People who speak the same language with the same accent or jargon distinguish themselves from others.