👉 A fluid, in this context, refers to a liquid substance that can flow easily and smoothly. Unlike solids or gases, fluids have no fixed shape but instead adapt to the shape of their container, allowing them to move and change form in response to external forces. This property is due to the cohesive and adhesive forces between fluid molecules, which enable them to flow and fill spaces. Examples of fluids include water, oil, and air, each exhibiting different behaviors based on their composition and the conditions they are under.
