Ключевые слова: authority, bacteria, biohazard, border, caution, chance, choice, clinic, closeup, command, confusion, contamination, corona, coronavirus, disease, door, epidemic, flu, global, globe, graphic, illness, infection, influenza, iron, leading, lock, lockdown, lost, map, medical, old, opening, opportunity, padlock, prevention, protection, quarantine, safe, safety, secure, security, solution, sport, steel, surgical, symbol, system, teeth, virus,