A kin group is a social unit made up of individuals who share a common ancestry, identity, or purpose. There are various synonyms for the term 'kin group' that have different connotations or emphasize various aspects of kinship relationships. For instance, you can use 'clan' to refer to a large family group with a shared lineage or 'tribe' to denote a group of people with a common culture and traditions, geographical origin or history. Other synonyms include 'family', 'clique', 'sect', 'lineage', 'kindred', 'community', 'association', 'coterie', 'faction', and 'union'. Each word captures the connectedness, loyalty, and shared values that define the kin group.