The term "4차 산업혁명" refers to the Fourth Industrial Revolution, a phase of technological advancement characterized by the fusion of digital, biological, and physical worlds. This revolution is driven by innovations such as artificial intelligence, robotics, the Internet of Things (IoT), and big data, which are transforming industries and economies globally. Unlike previous industrial revolutions, the 4차 산업혁명 emphasizes automation and connectivity, leading to smarter manufacturing processes and enhanced productivity. It also raises important questions about the future of work, privacy, and ethical considerations in technology, as society adapts to rapid changes in how we live and work.