Based on temperature:
* Plasma: This is the most common name for very hot gas where electrons are stripped from the atoms, creating a charged state.
* Superheated steam: This refers to steam heated above its normal boiling point.
* Incinerated air: This refers to air heated to a very high temperature, often in a combustion process.
Based on composition:
* Exhaust gases: These are the hot gases produced by combustion engines.
* Volcanic gases: These are the hot gases released from volcanic eruptions.
* Flue gases: These are the hot gases produced by burning fuel in a furnace or boiler.
Other terms:
* Thermal plume: This refers to a column of hot gas rising from a heat source.
* Hot air balloon gas: This refers to the hot air used to inflate hot air balloons.
Ultimately, the best way to describe hot gas is to provide more context about its specific properties and uses.