This meaning is used to refer to a group of people who share common cultural, social, or racial characteristics. It often highlights similarities in tradition, ancestry, or social identity.

This meaning is used in biological contexts to classify organisms into categories based on their evolutionary relationships. It refers to a group of organisms that share common characteristics and are classified together in taxonomy.

In astronomy, this meaning describes the classification of groupings of stars within galaxies based on their age and composition. It can refer to distinct types of stellar populations within a galaxy, such as Population I, II, and III.