What is the term for a volcano that is currently erupting or shows signs of eruption?

An active volcano is defined as one that is currently erupting or has shown recent signs of eruption. This includes volcanoes that may have had eruptions in the recent past or are expected to erupt in the near future based on geological activity. The term emphasizes the volcano's capacity to produce eruptions that can impact the surrounding environment and communities.

In contrast, a dormant volcano refers to one that is currently inactive but has the potential to erupt again in the future. An extinct volcano, on the other hand, is one that has not erupted for a very long time and is not expected to erupt again. Submarine volcanoes are those found underwater, and while they can be active, the key distinction for the term 'active volcano' specifically pertains to surface-level activity. Thus, the correct term for a volcano that is currently erupting or exhibiting signs of potential eruption is 'active volcano.'