What is the Difference Between Incompressible and Compressible Fluids

What is the Difference Between Incompressible and Compressible Fluids:

The dependency of liquid volume on pressure may be expressed in terms of the coefficient of compressibility. The coefficient is constant over a wide range of pressures for a particular material, but is different for each substance and for the solid and liquid states of the same material. For liquids,volume decreases linearly with pressure. For gases volume is observed to be inversely proportional to pressure/. If water in its liquid state is subjected to a pressure change from 1 to 2 atm, then less than a 0.001 % reduction in volume occurs (the compressibility coefficient is very small).However, when the same pressure differential is applied to water vapour, a volume reduction in excess of 2 occurs.–