Ключевые слова: billboard, blackboard, board, business, chalk, chalkboard, circle, color, colorful, communicate, communication, community, concept, connect, connection, contact, cooperation, crowd, diagram, drawing, figure, friends, group, human, idea, link, linked, man, meeting, net, network, organization, partnership, people, person, relationship, shape, sketch, social, structure, support, symbol, system, team, teamwork, together, world, write,