Mental Health Practitioner
A person trained, qualified and holds a valid practice license to provide emotional and psychological services in a given city, country or internationally. Usually, a counselor, a therapist/psychotherapist, a psychologist or a psychiatrist.
Coach
A person trained to offer coaching or act as a coach in a given area of the practice.
Mentor
An expert, skilled or experienced person in any area of life or career, who is willing to share in a supportive way, that knowledge (the hows) with another person interested in understanding that field or industry.