A professor was an individual teaching at a university level. "Associate Professor of Xenolinguistics" was a title held by Doctor Milanda Vorgan, author of "The Written Word: A Brief Introduction to the Writing Systems of Galactic Basic." She held the title while teaching at the University of Charmath. The term "professor" can also be used as an insult, such as when giving advice when it is already obvious. This type of usage was especially prevalent with Han Solo, where he sarcastically referred to C-3PO as such when the latter mentioned that the asteroid's ground was unstable.