A swarm of friends congratulated him.
A riverbank swarming with insects.
Sailors swarming the ship's deck.
A swarm of onlookers.
A swarm of ants.
To swarm the quarterback, researchers swarming a problem.
When hundreds of bees fly out all at once, this is an example of when they swarm.
When a concert is overcrowded with people and they are packed in tight and moving about, this is an example of when the concert swarms with people.
When 2000 people all show up for a protest, this is an example of a swarm.
When hundreds of honeybees fly out of their nest, this is an example of a swarm.
A swarm of earthquakes.
Shoppers have swarmed into the mall.