What is a relatively large number of people who are in one another's immediate vicinity?

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A crowd is a relatively large number of people who are in one another's immediate vicinity. A social group refers to a set of individuals who interact with each other and share a sense of belonging. Critical mass refers to the minimum number of people needed to initiate or sustain a particular behavior or activity. A category is a grouping based on shared characteristics or attributes.

What Is a Relatively Large Number of People Who Are