These terms get used interchangeably but do mean very different things. Coaching will use behavioural interventions such as action planning and focus on barriers that get in the way of moving forward.  Rooted in positive psychology, coaching can be helpful for those who may need guidance and focuses on more superficial challenges.  Counselling may provide guidance through challenging perceptions or habitual negative self talk (for example) and is usually over a short period of time. Counsellors speak to a wide variety of challenges and serve to help clients unravel or make sense of the root of that challenge; going deeper than coaching. Counsellors can help us make sense of our emotions (or lack thereof) and may take many routes to that end. Therapy is more long-term with a focus on challenges related to anxiety, depression, and trauma.  Therapy goes deeper into those factors that cause mental illnesses including early childhood adversity, traumas, and the like.  Those therapists with all three skill sets can weave in and out coaching, counselling, and therapy seamlessly as a way to help one transition into a more holistic way of living.