What's an example of a liquid and gas fluid

An example of a liquid is water and an example of a gas fluid is water vapour.

Explanation:

A fluid refers to a substance that flows when confronted with an outside force. Fluids can be liquids, gases or plasma. Therefore any liquid can be an example of a liquid fluid and any gas can be an example of a gas fluid. This also means that any substance that goes through a liquid and gas phase, such as water, can be both a liquid and gas fluid.