Read the dictionary definition of fluid. All definitions for this word.
1. continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas
2. a substance that is fluid at room temperature and pressure
3. subject to change; variable
1. a fluid situation fraught with uncertainty
2. everything was unstable following the coup
4. affording change (especially in social status)
1. Britain is not a truly fluid society
2. upwardly mobile
5. in cash or easily convertible to cash
1. liquid (or fluid) assets
6. smooth and unconstrained in movement
1. a long, smooth stride
2. the fluid motion of a cat
3. the liquid grace of a ballerina
7. characteristic of a fluid; capable of flowing and easily changing shape