A community is commonly considered a social unit (a group of people) who have something in common, such as norms, values, or identity. Often - but not always - communities share a sense of place that is situated in a given geographical area (e.g. a country, village, town, or neighborhood). Durable relations that extend beyond immediate genealogical ties also define a sense of community. People tend to define those social ties as important to their identity, practice, and roles in social institutions like family, home, work, government, society, or humanity, at large. Although communities are usually small relative to personal social ties (micro-level), "community" may also refer to large group affiliations (or macro-level), such as national communities, international communities, and virtual communities.
The word "community" derives from the Old French comuneté, which comes from the Latin communitas "community", "public spirit" (from Latin , "shared in common").
Human communities may share intent, belief, resources, preferences, needs, and risks in common, affecting the identity of the participants and their degree of cohesiveness.
Community studies is an academic field drawing on both sociology and anthropology and the social research methods of ethnography and participant observation in the study of community. In academic settings around the world, community studies is variously a sub-discipline of anthropology or sociology, or an independent discipline. It is often interdisciplinary and geared toward practical applications rather than purely theoretical perspectives. Community studies is sometimes combined with other fields, i.e., "Urban and Community Studies," "Health and Community Studies," or "Family and Community studies."