Ключевые слова: accomplishment, achievement, agent, answer, belief, broker, business, businessman, concept, enigma, enter, estate, future, hand, hold, home, housing, input, key, keyhole, know, knowing, knowledge, lock, locking, market, mortgage, opportunity, ownership, past, potential, power, question, real, secret, secure, security, solution, success, successful, uncertain, unknown, unlock, unlocking, up,