박사 (doctor) is a title given to individuals who have completed advanced studies and research in a specific field, typically earning a PhD or equivalent degree. This title signifies a high level of expertise and knowledge, allowing them to contribute significantly to their area of study. In many countries, 박사 holders often work in academia, conducting research and teaching at universities. They may also be involved in consulting, publishing, or working in specialized industries, applying their skills to solve complex problems and advance their fields.