Dormant volcanoesare classified as extinct but erupted violently.
It is not expected to ever erupt again.
Mount Fuji is classified as an active volcano that last erupted in 1707-08.
The volcano is said to be extinct if it hasn't erupted for at least 10,000 years.
Simply an "active" Volcano. If it has NOT erupted for a long time it can be a "dormant" or "extinct" Volcano.
extinct
Extinct volcano's
A volcano that has erupted within historic time is an Active Volcano.
If volcano is extinct then it is possibly "dead". It wouldn't have erupted in a million years take or give some.
An extinct volcano is one that will never erupt again.
A loooooooong time ago it was classified as a Stratovolcano. When it erupted, the magma cooled and hardened in the volcano. Eventually, the outer part eroded away, causing the cooled magma to be exposed. After that, it was then classified as an extinct volcano, and to this day it is a popular tourist attraction.
active
Erupted recently - active. Hasn't erupted recently but could - dormant. Will never erupt again - extinct.
Krakatau is still an active volcano today the last time it erupted was in April 2008