General name: teacher.

Man: Sir.

Woman: Madam.

Young or you think you are beautiful: Miss.

If you are very old and married again.

Lecturers and teachers use it more in Britain. America prefers tutors and instructors. These all mean "teacher"

More generally, teachers' main "battlefield" is in the classroom, which is "one-to-many" teaching; The tutor's main "battlefield" is outside the classroom, providing targeted counseling for the needs of different students.