2116: Fluids vs. Liquids Sep 30, 2020

When people say during the summer to take a lot of fluids, there's a good chance this relates to hydration. This isn't a problem per se, because liquids are fluids, but the two are not directly synonymous. Fluids can denote anything which doesn't hold its shape and does not resist external pressure, which also includes gasses but not some pastes or really thick syrups for instance. In general use, it will most likely be understood to mean just the thinner liquids.