The term "nervus auricularis posterior" refers to the posterior auricular nerve, which is a branch of the facial nerve. This nerve innervates the muscles behind the ear, as well as the skin on the back of the earlobe and the scalp above it. While there are no direct synonyms for this specific term, it can be described in alternative ways. For instance, one can refer to it as the nerve that supplies sensation and controls movement in the posterior auricular region. Additionally, it can be called the nerve responsible for innervating the muscles and skin located behind the ear.