Instructor
Part of speech: noun
Definition: One who instructs; a teacher
Example sentence: If you talk to somebody else, they can say whatever they want about you, but I'm pretty secure with what I've done and my fights. Win or lose, it's all experience, and it shapes the person you are and the instructor you are.
Teacher
Part of speech: noun
Definition: A person who teaches, especially one employed in a school.The index finger; the forefinger.The second highest office in the Aaronic priesthood, consisting held by priesthood holders of at least the age of 14.
Example sentence: A good teacher, like a good entertainer first must hold his audience's attention, then he can teach his lesson.