what they are
A registered nurse (RN) is a nurse who has graduated from a nursing program and met the requirements outlined by a country or state licensing body in order to obtain a nursing license. An RN's scope of practice is determined by local legislation governing nurses, and usually regulated by a professional body or council.
How is a registered nurse (RN) different from a licensed practical nurse (LPN)?
Licensed practical nurses (LPN's) typically have one year of education and are prepared to perform simple to complex medical procedures and tasks. They operate under the supervision of a registered professional nurse or a physician. Registered nurses (RN's) have two to four years of education and are prepared to practice in a variety of health care settings to meet the health needs of individuals across the life span.