Social_Groups_And_Collective encompasses the fundamental building blocks of social organisation that emerge from regular patterns of human interaction, shared identity, and mutual recognition among members. These object aggregates represent various scales and types of social association, from intimate personal relationships to large-scale social categories, each characterised by distinct patterns of interaction, solidarity, and group consciousness. They include both primary groups that provide emotional support and identity formation, and secondary groups that serve more instrumental purposes. The diversity within this domain reflects the multiple ways humans organise themselves socially, create boundaries between "us" and "them," and develop collective identities that transcend individual characteristics. These aggregates are essential for understanding how social structure emerges from individual action and how social identity and belonging are constructed and maintained.