Ключевые слова: business, change, communication, computer, concept, connection, corona, course, courses, covid 19, cube, development, dice, digital, distance, ebusiness, education, elearning, electronic, home, internet, job, knowledge, learn, learning, lesson, message, networking, offline, online, online lesson, online training, orange, school, seminar, student, study, studying, symbol, teaching, technology, text, training, using, video, video call, web, webinar, website, word,