a person who guides or coaches others in a specific field or activity

coach; mentor; counselor; instructor; director; guide; conductor

a period of tuition or a private lesson, often for a very small number of students

(of a notable person etc) to honor with one's presence and offer guidance

an academic supervisor or advising professor, typically for a student's thesis or research

a person responsible for choreographing and directing martial arts and action sequences in a film or play, also known as an action choreographer.

a person who provides technical instruction or coaching