Ключевые слова: adhesive, advertise, board, business, card, change, client, communication, concept, emotion, emotional, empathy, face, funny, good day, happiness, happy, humanity, humor, icon, joy, learn, mind, mood, negative, nice day, note, opinion, paper, people, positive, post, post it, post it smiley, post it with a smile, psychology, reminder, sad, sign, smile, smile icon, sociale, sticky, sticky notes, sticky notes wall, think, thoughts, tooth,