* A horde of tourists descended upon the ancient ruins. (This implies a large, overwhelming group)
* The warrior led his horde into battle. (This implies a large group of fighters)
* A horde of locusts devoured the farmer's crops. (This implies a destructive, swarming group)
* The internet was overrun by a horde of angry commenters. (This uses the word figuratively to describe an overwhelming number)
Let me know if you'd like more examples!