An endogamous group is a social unit that marries and reproduces within the same cultural, religious, or ethnic group. Synonyms for endogamous group include tribal group, homogeneous group, and closed community. A tribal group is a community of people who share a common ancestry, language, or culture. A homogeneous group is a community of individuals who share similar characteristics or traits, such as race, gender, or sexuality. A closed community is a group that restricts membership, often based on shared beliefs or values. These synonyms all highlight the insular nature of an endogamous group, emphasizing the sense of cohesion and exclusivity that characterize these social units.