What a group of people organized for a common purpose?

A group of people organized for a common purpose is often referred to as a collective, organization, or association. These groups can vary in size and structure, ranging from informal gatherings to formal institutions like nonprofits, clubs, or advocacy groups. Their shared goal can encompass various interests such as social change, professional development, community service, or cultural engagement. By coming together, they can leverage their collective resources and efforts to achieve their objectives more effectively.