air masses
Most hydroelectricity is generated from large dams built across large rivers. A smaller amount comes from turbines in rivers, bays and swift-moving tidal races.
A large amount of rock fall is called an avalanche.
If a large amount of gold is closely held, it may be called a hoard of gold.
Fast-moving predators need a large amount of food because they burn more energy when thy are hunting. They need more food, to supply the greater amount of energy they use.
A large amount of flowing water could be Lake Washington. The water is always moving. Another large amount of flowing water is the Columbia River. Since it is so long it is always moving... I hope this helps!
If it's a large area of land, continental (although an airmass would be described as such only after significant time/distance over land, it would still be maritime at the coast).
obesity
A large amount of individual products is often referred to as inventory or stock in the industry.
Although a slow-moving object may not have a high speed, it can still possess a significant amount of kinetic energy if it has a large mass. This is because kinetic energy depends not only on speed but also on the object's mass. In the case of a steamroller, its large mass contributes to its substantial kinetic energy even when moving slowly.
When a business or a firm produce large amount of production, then it is called large scale of production.
A pandemic is a widespread illness across a large geographic area such as a continent. In this pandemic, it was world-wide, partially due to troops moving around the world during WW1 spreading it as they went.
river or lake