I'm pretty sure that earthquakes are more common. Also, earthquakes can open up cracks in volcanoes which leads to built up pressure being released from the core of the volcano, which usually leads to a volcanic eruption.
earthquake
are you asking which is more dangerous because if so volcano's are very dangerous but they don't happen as often as earthquake's. earthquakes would be more dangerous because they happen very often tearing down many home and countries also volcano's are pretty bad as well but there aren't very many of them so the answer would be an earth quake.
A volcano is a mount (or mountain) that has magma in it. A volcano also is like an earthquake releasing pressure from the inner core of the earth. If there is a lot of pressure to be released this will cause the eruption to be bigger and more destructive, like the volcano Mount Tambora that erupted in 1815.
earthquakes that produce more horizontal
This is known as a tsunami.
The chemical in the lava called dephormatic semoriphatic will make the land shake more because of the small land causing a horrible earthquake
When the Volcano explodes, the impact blows the top of the volcano. in an earthquake, the plates under the soil start moving and cause impact.
Broadly speaking, the amount of damage an earthquake causes will increase as it's magnitude increases. For more information on this topic, please see the related questions.
The plates rub together causing the rocks to move and it causes the ground to shake forming an earthquake. The more the plates move, the bigger the earthquake number.
The type of earthquake that causes damage to roads and buildings is typically a strong or major earthquake. These earthquakes have higher magnitudes and release more energy, leading to more intense shaking that can result in structural damage to infrastructure like roads and buildings.
Earthquakes cause shaking that causes soil, rocks to slide down a mountain side. The longer the earthquake the more likely there will be large landslides. Volcanoes can also cause landslides when they erupt.
Some scientists think that a big asteroid hit the Earth, a volcano erupted lots of poisonous lava on the dinosaurs, there was a big earthquake or because the weather was very cold.