Answer:A mentor
Explanation:A mentor is someone who has a great amount of experience and who is more knowledgeable and as a result has decided to guide and share their experience with someone who has less experience and knowledge than they do.
This person can be of an age as long as they have expertise in particular field. This person will form a relationship with a less experienced person who want to learn and improve , the less knowledgeable person will get more proficient as they interact with their mentors and get to learn from them.
