A nomad is a person with no settled home, moving from place to place as a way of obtaining food, finding pasture for livestock, or otherwise making a living. The word "nomad" comes ultimately from the classical Greek word νομάς ("nomás", "roaming, wandering, especially to find pasture"), from Ancient Greek νομός ("nomós", "pasture"). Most nomadic groups follow a fixed annual or seasonal pattern of movements and settlements. Nomadic peoples traditionally travel by animal or canoe or on foot. Animals include camels, horses and alpaca. Today, some nomads travel by motor vehicle. Some nomads may live in homes or homeless shelters, though this would necessarily be on a temporary or itinerant basis.