Question

what is a earthquake and natural disaster ​

Answer 1

An earthquake is the result of a sudden release of stored energy in the Earth's crust that creates seismic waves. ... In its most generic sense, the word earthquake is used to describe any seismic event—whether a natural phenomenon or an event caused by humans—that generates seismic waves.

A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include firestorms, duststorms, floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, storms, and other geologic processes.