Ключевые слова: abstract, aim, backdrop, background, black, blackboard, board, bulb, business, chalkboard, closeup, communication, concept, creative, development, discussion, drawn, education, explaining, face, finacial, focus, growth, happy, idea, information, knowledge, light, memo, message, office, plan, project, research, reward, service, smile, space, sticker, sticky, success, target, training, wall, way, word, work, yellow, yes,