A resident physician is a medical professional who is currently undergoing post-graduate training in a particular specialty or subspecialty. There are several synonyms that can be used to describe a resident physician, including a medical resident, intern, trainee doctor, physician in training, or junior doctor. These synonyms are often used interchangeably, and they all refer to medical professionals who are still in the process of completing their training. A resident physician is a crucial part of the medical team, as they work closely with attending physicians to develop their clinical skills and prepare for their future careers as fully licensed doctors.