Crowd refers to a large, loosely organized, reputationally based peer group made up of individuals and cliques that share similar norms, interests, attitudes and values, or who may or may not spend much time together and who are identified by the activities of the group; a large group that is usually recognized by a few predominant characteristics, such as the "preppies," the "jocks," "yuppies", or the "druggies", etc.
Crowd is also defined as a gathering of individuals, usually in a public place, who are present in the same general vicinity and share a common focus.
List of books: Crowd