Tutoring is academic support provided by a master teacher; someone with deep knowledge or defined expertise in a particular subject or set of subjects.
A tutor, formally also called an academic tutor, is a person who provides assistance or tutelage to one or more people on certain subject areas or skills. The tutor spends a few hours on a daily, weekly, or monthly basis to transfer their expertise on the topic or skill to the student. Tutoring can take place in different settings.