Ключевые слова: accident, alarm, alert, ambulance, assistance, attention, background, bell, business, call, care, caution, concept, danger, design, doctor, emergency, equipment, fire, health, help, hospital, icon, illustration, information, internet, management, mark, medical, message, notice, phone, police, protection, reminder, rescue, risk, safety, security, service, sign, signal, siren, sos, support, symbol, technology, urgency, warning,