Cna is an assistant usually in nursing homes. Usually all physical work. Bsn and Rn are the same. BSN specifies they have a bachelor's instead of associates. LPN is Usually a 1 year certificate. Licensed Practical Nurse. Practice in Doctors offices and nursing homes. Sometimes in hospitals (not around me). Because they have less education, they're paid around 40% less than an RN. In my area they do immunizations and vitals in doctor's offices. In nursing homes they mainly do med passes, vitals, and review if cna says something is wrong. In this specific case for ltc RN's usually have more administrative roles and there are less (lpn's cheaper).