noun
Academic title for a university professor. In Japanese universities, it is the highest rank, above 准教授 (associate professor) and 講師 (lecturer).
彼は東京大学の教授です。
He is a professor at the University of Tokyo.
山田教授に研究の指導
I asked Professor Yamada to supervise my research.
noun, noun or participle which takes 'suru', transitive verb
Refers to the act of teaching or instructing, often in an academic or formal setting. Can be used as a noun or with する as a transitive verb.
彼は英語を教授している。
He teaches English.
教授法についての研修を受けた。
I attended a workshop on teaching methods.