Ключевые слова: abstract, alternate, are, background, banner, billboard, blackboard, blank, book, chalk, chalkboard, character, chat, cloud, communication, concept, content, conversation, converse, design, detail, discourse, empty, exchange, frame, graphic, hello, hi, how, icon, label, lecture, lover, man, message, pattern, people, say, script, sign, smile, speak, speech, substance, swap, symbol, tag, talk, tell, text, texture, title, voice, welcome, white, woman, word, writing, you,