This document defines and provides examples of different types of social norms: folkways, mores, taboos, and laws. Folkways are minor social conventions like chewing quietly in class. Mores are norms based on morality, like prohibitions on premarital cohabitation. Taboos are strongly prohibited behaviors considered unclean, like eating pork or incest. Laws are codified norms backed by legal punishment, such as prohibitions on polygamy in the United States. The document uses these examples to distinguish between different levels of social norms.