Counselling – In broad terms, Counseling focuses on one specific issue and it is considered a short-term treatment. One may learn coping techniques and problem solving skills. Couple Counselling, Career Counselling or Queer Counselling are various domains of it.
Therapy or Psychotherapy – it deals with long term and more complex issues. It is more about the therapeutic approaches that are used in a mental health counselling process. Like Cognitive Behavioural Therapy (CBT), Expressive Art Therapist (EAT), REBT these can be used in a Counselling process, but one requires appropriate training and experience to use certain therapies.
Sometimes Therapy and Counselling are used interchangeably.