Ключевые слова: african, alert, alphabet, attention, background, biology, blood, communication, concept, coronavirus, covid, covid19, crown, cube, design, disease, education, evolution, flu, fluron, flurone, goal, health, hospital, idea, illness, infection, laboratory, letter, letters, medical, medicine, message, microbiology, ncov, pandemic, pneumonia, science, sign, success, symbol, text, typography, vaccine, virus, wood, wooden, word, words,