Ключевые слова: abstract, address book, app, arrow, background, black, business, chat, communication, computer, concept, connect, connection, contact, data, design, digital, email, global, globe, group, icon, icons, illustration, information, internet, laptop, letter, mail, media, message, microphone, mobile, network, notebook, people, person, phone, set, sign, smart phone, social, speech, symbol, technology, telephone, web, website, wireless,