👉 A fluid is a substance that takes the shape of its container while maintaining a constant volume. The key distinction lies in its behavior: unlike solids, which have a fixed shape and volume, or gases, which expand to fill any container regardless of its shape, fluids adapt to their surroundings. Liquids, a common type of fluid, are neither gases nor solids; they flow and maintain a definite volume but take the form of their container. This unique property allows them to fill spaces and move between containers, unlike gases that spread out to fill all available space. Essentially, fluids balance the need to maintain volume while conforming to the shape of their environment, distinguishing them from both solids and gases.
