I may not have much but from what I see, the words “Mentor” and “Teacher” are both similar because they both teach skills in school. However, Mentors help to guide inexperienced or less knowledgeable people. A teacher helps others acquire knowledge. A colleague is a person that you work with at a job, school, etc. For example, your teachers and classmates are your colleagues. A student is a person who is enrolled into an educational institution that helps with acquiring knowledge and skills for later on in life. I hope this helped!