A trusted adviser is someone who provides guidance and advice to another person. A MENTOR is a trusted adviser who has experience in a particular field and can provide guidance and advice to someone else in that same field. A GURU is a trusted adviser who is highly knowledgeable in a particular field and can provide guidance and advice to someone else in that same field. Both mentors and gurus are respected for their expertise and experience, and they are often sought out by those looking for advice.