Professors are educators who teach at colleges and universities. They specialize in specific subjects, such as mathematics, history, or biology, and are responsible for guiding students in their learning. Professors often create lesson plans, deliver lectures, and assess student performance through exams and assignments. They may also conduct research in their field of expertise. In addition to teaching, professors often mentor students and help them with academic and career advice. Many professors hold advanced degrees, such as a Ph.D., which demonstrates their expertise. They contribute to their academic community by publishing research papers and participating in conferences related to their field.