| Word | Definitions | Synonyms |
|---|---|---|
| volcanism | (noun) the phenomena associated with volcanic activity | - |
| volcano | (noun) a mountain formed by volcanic material | - |
| (noun) a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt | Synonyms: vent | |
| volcanology | (noun) the branch of geology that studies volcanoes | Synonyms: vulcanology |