Ключевые слова: background, biohazard, blackboard, board, chair, chalkboard, class, classroom, college, concept, coronavirus, covid19, danger, desk, disease, education, elementary, empty, epidemic, furniture, green, high, infection, infectious, inside, interior, knowledge, learn, lecture, lesson, medical, nobody, outbreak, pandemic, pneumonia, quarantine, room, school, seat, seminar, student, study, table, teacher, teaching, training, university, virus, wall, wooden,