a common social group.

Having identified folk artifacts, the professional folklorist strives to understand the significance of these beliefs, customs, and objects for the group, since these cultural units would not be passed along unless they had some continued relevance within the group. That meaning can, however, shift and morph; for example, the Halloween celebration of the 21st century is not the All Hallows' Eve of the Middle Ages and even gives rise to its own set of urban legends