An active volcano is defined as a volcano that has erupted recently or is currently erupting. However, there are various synonyms for the term, depending on their degree of activity. A highly active volcano is referred to as a 'mega-colossus', while a moderately active volcano can be called a 'semi-active volcano'. A volcanic organism that erupts occasionally is known as a 'dormant volcano', and a volcano that is not expected to erupt again is called an 'extinct volcano'. Other descriptive terms used to describe a volcano's activity include 'erupting volcano', 'live volcano', and 'smoking volcano'. Regardless of the synonym used, an active volcano is a powerful and awe-inspiring force of nature that demands respect.