Tutoring is private academic help, usually provided by an expert 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 (also called a tutee). Tutoring can take place in different settings.