mercantile establishment: a place of business for retailing goods
place of business: an establishment (a factory or an assembly plant or retail store or warehouse etc.) where business is conducted, goods are made or stored or processed or where services are rendered
survivor guilt: a deep feeling of guilt often experienced by those who have survived some catastrophe that took the lives of many others; derives in part from a feeling that they did not do enough to save the others who perished and in part from feelings of being unworthy relative to those who died