Basin
A large low-lying area, often below sea level
Real World Example
Imagine you're trying to carry a full tray of drinks across a crowded room without spilling anything. This task is similar to how a large water-covered area, or basin, exists between continents, holding massive amounts of water without spilling over. Just like the tray provides structure and boundaries to keep the drinks from spilling, a basin is the Earth's natural structure that contains and maintains the ocean's vast expanse of water, ensuring it stays neatly between the continents.
Practice Version
