Instruction deals with the practical aspects of a subject or an art. On the other hand, teaching deals with the theoretical aspects of a subject or an art. This is an important difference between teacher and instructor. A teacher, on the other hand, throws sufficient light on the ‘what to do’ aspects of a subject or an art. On the other hand, an instructor throws more light on the ‘how to do’ aspects of a subject or an art.

Teacher is a person who is appointed by the management of a school or any other educational institution to teach a given subject to the students. On the other hand, an instructor is appointed by the organizers of training camps or retreats. The job of an instructor is usually not a permanent one. On the other hand, the job of a teacher is a permanent one. These are the differences between the two words, namely, teacher and instructor.