The gaseous state of a substance that is normally a liquid or solid is called a vapor.

Here's a breakdown:

* Liquid: A substance with a definite volume but no definite shape.

* Solid: A substance with a definite volume and shape.

* Vapor: The gaseous state of a substance that is typically a liquid or solid at room temperature.

For example:

* Water: Normally a liquid, but it can exist as a vapor (water vapor) in the air.

* Ethanol: Normally a liquid, but it can evaporate and exist as ethanol vapor.

* Mercury: Normally a liquid, but it can exist as mercury vapor at high temperatures.

The process of a liquid or solid turning into a vapor is called vaporization or evaporation.