A group is defined as a collection of three or more individuals who collaborate to achieve a common purpose, with effective communication playing a key role. Healthy groups are characterized by ethical goals, interdependence, cohesiveness, accountability, and synergy, developing norms and ground rules to enhance their functioning. The document also outlines the stages of group development—forming, storming, norming, performing, and adjourning—while detailing various types of groups, including family, social friendship, support, interest, service, and work groups.