The term "macro seism" refers to an earthquake that is strong enough to be felt by people and cause damage to buildings and infrastructure. Synonyms for macro seism include "large quake," "major earthquake," "severe tremor," and "significant seismic event." These synonyms are often used interchangeably in scientific and media reports to describe earthquakes above a certain magnitude threshold. Other related terms that can be used include "quake," "tremor," "shocker," and "temblor." Using different synonyms can help to convey the severity and impact of an earthquake and provide a more accurate description of its magnitude and effects on the affected areas.