Cultural norms refer to the shared values, beliefs and attitudes that shape the behavior of a particular group or society. These are the unwritten rules that govern how people interact with each other, their expectations about appropriate behavior in different situations, and what is considered acceptable or normal within their culture. Cultural norms can vary widely between cultures and even within subgroups within a larger culture. They influence everything from social interactions to business practices, and are often learned through observation and imitation rather than being explicitly taught. Understanding cultural norms is important for effective communication and building relationships across different cultures.