Facets, or features, refer to the distinct characteristics or attributes of an object, concept, or system. They help in categorizing and understanding the various components that make up something complex. For example, in a product like a smartphone, facets may include its camera quality, battery life, and screen size. In the context of data analysis, facets can also refer to the different dimensions or perspectives from which data can be examined. This allows users to filter and explore information more effectively, such as viewing sales data by region, product type, or time period.