There is a difference between a CNA, RN, and LPN. A certified nursing assistant (CNA) assists patients under the supervision of a registered (RN) or a licensed practical nurse (LPN) (LPN). — Nurses come in a wide range of specializations. To begin, you may divide nurses into groups based on their specializations, scope of practice, education, licensing, and salary. A licensed practical nurse (commonly known as an LPN or LVN), a registered nurse (RN), and a certified nursing assistant (CNA) are three…