Vernacular, popular or perceptual cultural regions are those perceived to exist by their inhabitants, as is evident by the widespread acceptance and use of a distinctive regional name. Some vernacular regions are based on physical environmental features; others find their basis in economic, political or historical characteristics. Vernacular regions, like most culture regions, generally lack sharp borders, and the inhabitants of any given area may claim residence in more than one such region. It grows out of people's sense of belonging and identification with a particular region. An American example is "Dixie". They often lack the organization necessary for functional regions although they may be centered on a single urban node. They frequently do not display the cultural homogeneity that characterizes formal regions.