Ключевые слова: angry, assessment, bad, business, button, colorful, concept, control, customer, design, emoji, emoticons, emotion, emotions, experience, face, feedback, flat, good, goods, great, icon, illustration, like, meter, mood, negative, neutral, normal, opinion, positive, quality, ranking, rating, review, sad, satisfaction, scale, service, set, sign, smile, survey, symbol, user, vote, web,