At the most general level, a group is a collection of individuals, regardless of ethnicity, occupation, gender, or reason for coming together.
At the psychological level, a group requires specific conditions, and the group has a special consciousness that governs its activities.
Is a square dancer in a square a group?
Are tens of thousands of people walking on foot on a road a group?
Thousands of people in the Thousand Lanterns Lake Park bustling crowd, walking, cycling, chatting, running, taking pictures, this is the group?
The demolition class organized thousands of people, is it a group?
The Horseheads Speech Organization is constantly absorbing like-minded enthusiasts, is this a group?
And doctors, workers, teachers, students, company employees, actors, journalists are groups?
Groups at the psycho-stratigraphic level, that is, organized groups, have a characteristic that distinct personalities no longer exist.
Sometimes groups do not require individuals to be in the same place at the same time, and sometimes less than 10 people can be taken together to form a psychological group.