Charge Nurse - The administrative boss nurse on each shift. You don't usually see the Charge Nurse. This is who you are likely to see after evaluation in the ER should you go there, or at night in the Club if an order needs to be written. This is 4 years in length. The first two years are basically classroom time.
Third year begins clinical experience.
The fourth year is more of the same clinical experience. After medical school, residency begins. They have no power. Nurse Practitioner - Nurse practitioners are nurses with an advanced level of knowledge and education in both nursing care and human physiology. They practice in a variety of settings and may provide primary care to defined subgroups of people.