After shocks are the tremors that follow a major earthquake. Synonyms for this term include tremors, aftershocks, replicas, and seismic events. Tremors refer to small, often low-intensity earthquakes that occur after a main shock. Aftershocks are smaller earthquakes that typically follow a larger earthquake, often in the same area and with similar characteristics. Replicas are minor aftershocks that occur in the hours or days following an earthquake. Seismic events are geological disturbances that have a significant impact on the earth's crust, including earthquakes, volcanic eruptions, landslides, and tsunamis. Using these synonyms can help people better understand the effects of earthquakes and their related phenomena.