swarm

a large number of people, things, animals, insects, etc. moving together as a group กลุ่มจำนวนมากมาย

Camera shutters clicked like a gigantic swarm of crickets as the barge procession based by.

Large swarms of bees from several hives attacked the novice monks who were sweeping the grounds of the temple in the afternoon.

A large contingent of army and air force soldiers and police were spread around the air force base, about 2kms from the National Memorial to block swarms of motorcycles and pickup trucks.