Duck shot is a common term in hunting, and it refers to the size of shot pellets that are used to down ducks or other waterfowl. There are various synonyms for the term duck shot, including duck loads, birdshot, and waterfowl shot. The term duck loads is often used to refer to shotgun cartridges that specifically contain shot pellets for duck hunting. The term birdshot is a more general term that refers to any small pellets used for hunting birds. Similarly, waterfowl shot is a broader term that covers any form of ammunition used for hunting waterfowl, regardless of the size or type of pellet.