A seismogram is a record of seismic waves that are generated by earthquakes. Synonyms for the word seismogram include seismograph, seismic trace, earthquake record, and seismic record. A seismograph is an instrument used to record these seismic waves, and the seismogram is the output produced by the instrument. Along with seismogram, another term used to describe the graphical representation of seismic activity is seismogram chart. In addition to earthquakes, seismograms can also record other forms of ground vibrations, such as those produced by explosions. Overall, there are a variety of different terms that can refer to the scientific record of seismic waves, all of which capture the complexity and importance of this phenomenon.