Ключевые слова: agreement, background, billboard, black, blackboard, board, business, chalk, chalkboard, commerce, companionship, concept, conceptual, cooperation, copy, copy space, corporate, deal, design, drawing, final, formal, grunge, hand, handshake, handshaking, handwriting, joined, partnership, shake, shaking, sign, space, success, successful, symbol, trade, used, white,