What distinguishes one race from another?

One race is distinguished from another primarily by a combination of physical characteristics, such as skin color, facial features, and hair type, which are influenced by genetic ancestry. Additionally, cultural factors, including language, traditions, and social practices, play a significant role in defining racial identities. However, it is important to note that race is largely a social construct with no strict biological basis, as genetic variation within racial groups often exceeds that between them.