Deviance in sociology refers to violations of social norms. There are two main perspectives on deviance - absolutism views it as inherent to individuals, while relativism sees it as socially constructed. According to relativism, there is no universal deviance as acts are negotiated and defined differently across situations and historical contexts. For example, what constitutes murder or pornography can vary. Sociology focuses on the elements that define deviance, including social norms, expectations for compliance, perceptions of violations, and reactions to breaches of norms.