Ключевые слова: app, avatar, black, browser, chart, chat, computer, concept, conversation, crowd, design, election, electronic, exam, flat, head, icon, illustration, internet, isolated, laptop, line, logo, online, outline, people, person, poll, profile picture, question, questionnaire, quiz, result, settings, silhouette, simple, smartphone, social network, software, sticker, survey, tablet, team, teamwork, test, thin, thinking, web,