What name do we give to the family that combines liquid and gas

The family that combines liquid and gas are known as Fluids

Explanation:

Fluids are a generic name for liquids and gases alike. This family consists of matter that has the ability to flow and has no fixed shape, until they take the shape of their container.

They can also be influenced by external pressure.

Examples of fluids include water, water vapour, carbon dioxide. etc.