(Class in college): You can use 강의 or 수업. "This lecturer is boring. 이 강사는 지루해요/재미없어요." "The lecturer is not in class. 그 강사는 강의에 없어요" "I hate this lecture. 이 강의가 싫어요. 이 강의를 싫어해요." Lecturer (teacher in uni) and teacher (which is 선생님) are they the same in Korean? - Usually a lecturer in college is called 강사; a teacher in K-12 is called 선생님. - professor 교수님 and lecturer 강사 are also different in college.