The distinction between a certified nurse and a registered nurse lies primarily in their qualifications and the scope of their practice. A registered nurse (RN) is a healthcare professional who has completed an accredited nursing program and passed the National Council Licensure Examination (NCLEX-RN). This certification allows them to provide patient care, administer medications, and perform various medical procedures. On the other hand, a certified nurse typically refers to a registered nurse who has pursued additional education and training in a specialized area of nursing, leading to certification in that specialty. This additional certification demonstrates advanced knowledge and skills in a specific field, such as pediatrics, geriatrics, or critical care. In summary, the key differences between certified nurses and registered nurses revolve around their education, training, and areas of expertise. While all certified nurses are registered nurses, not all registered nurses hold certification in a specialty. This distinction highlights the varying levels of expertise and specialization within the nursing profession.