What is referred to as two or more people who share some common characteristic that is socially meaningful for themselves and others?

A social group

Explanation: A social group is formed when people who share the same values, preferences, interests, ethnic or social background come together like a team to form a group of some sort .

It deplict some social cohesion and it is not just an ordinary collection of people who come together for example it is not like group of people waiting for a bus to work or people waiting in a line at the bank but it is driven by these shared common things mentioned above such as shared values.

Some people are bonded into social groups due to sharing ancestry relations and some form those groups such as people who have a goal to save money for a vacation they may create a social group where the process of saving this money is discussed and implemented .