Homonym: vapor (Mist)
Vapor is a gas that forms when a liquid evaporates or boils. It consists of tiny droplets of liquid that are suspended in the air. Common examples of vapor include the steam that rises from boiling water and the mist that appears on a cold day when warm air meets cooler temperatures.
Vapor can also refer to the gaseous state of substances that are usually liquids at room temperature, such as water or mercury. When these substances are heated, they transition into vapor, which can be seen in various everyday situations, like the fog on a bathroom mirror after a hot shower.