Ключевые слова: actual, adult, age, alphabet, background, became, board, business, colorful, communication, concept, conversation, date, design, early, education, growing, hand, internet, letters, love, magnet, man, message, modern, online, pedagogy, period, phase, problem, psychology, puberty, pubescence, question, reminder, serious, sex, sign, stage, sticker, style, symbol, text, texture, time, transitional, word, world, written, young,