A social group is defined as a collection of two or more individuals who interact with one another in systematic and patterned ways on a regular or recurring basis, share common norms, values, and expectations, and develop a sense of collective identity or belonging. Groups can vary in size, from small, intimate primary groups like families and close friends, to larger, more formal secondary groups like workplaces or voluntary organisations, and even larger social categories like ethnic groups or social classes. The interaction within social groups is characterised by shared understandings, reciprocal influence, and a sense of "we-ness" that distinguishes members from non-members. Social groups are fundamental to social life, providing individuals with social support, a sense of identity, and a context for learning and enacting social roles and behaviours.