An ethnoreligious group (or ethno-religious group) is an ethnic group whose members are also unified by a common religious background. Ethnoreligious communities define their ethnic identity neither by ancestral heritage nor simply by religious affiliation but often through a combination of both. They have a long shared history; a cultural tradition of its own; either a common geographical origin, or descent from a small number of common ancestors; a common language, not necessarily particular to the group; a common literature particular to the group; a common religion different from that of neighbouring groups; being a minority or being an oppressed or a dominant group within a larger community.