Ordres are a system of classification used in various fields, including biology and architecture. In biology, an ordre (or order) is a rank in the taxonomic hierarchy, positioned between class and family. It groups together related families of organisms, helping scientists organize and understand the diversity of life, such as the Carnivora order, which includes animals like lions and bears. In architecture, ordres refer to the different styles of columns and entablatures in classical design. The five main ordres—Doric, Ionic, Corinthian, Tuscan, and Composite—each have distinct characteristics and proportions. These styles influence the aesthetics of buildings, contributing to their historical and cultural significance.