Instructors and tutors are two important roles in the field of education, but they are quite different. An instructor deals with a large group of students at a professional level, while a tutor manages a group (preferably small) on a more personal level. A teacher is someone who imparts knowledge to students, while an instructor is someone who teaches a specific practical skill. Teaching is part of the job of an instructor, but it does not include all the functions of teaching.
For those seeking personalized instruction, there are now many Profs online aca tutors available to help students with their academic needs. Tutors may have very specific skills that they teach to their students. They work privately for individual or small groups of students and usually teach one or two subjects. Tutor is a word that has partial synonyms, because other words do not describe in detail what it means to be a tutor.