1) n. The flowing together of two or more elements: streams or rivers, or ideas, influences, or cultures.
2) n. An assembling or flocking together in a crowd.
assemblage, convergence, junction
division, separation, coming apart
The United States is known for its confluence of cultures from all across the world, aptly named "a melting pot" of different identities.
The confluence of people in the square blocked the already crowded streets.
The Internship: The Big Interview