horde - large crowd: a large group of people - nomadic group: a group of nomads, especially of a people who live by hunting and foraging for food hunter-gatherers - swarm or pack: a large group of insects or other animals... throng - crowd: a large crowd of people or objects - crowd into place: to crowd into or fill a place - move in crowd: to move or gather in a throng - crowd around somebody: to surround and push against somebody when talking about a lot of people: horde is a large group of people throng is a large crowd of people

They essentially both mean a large gathering. However, the term 'horde' is usually used to describe a gathering of bad people, while the word 'throng' could be used for a gathering of either good or bad people.