Counselling involves dealing directly with a problem or issue with the person who has the problem or issue. Consultancy involves providing strategies or ideas to a person who will then use (or not) those strategies or ideas to deal with the problem themselves. Say a company is having problems with some employees who are under performing. A counsellor might become involved to work directly with the employees to try and assist them with doing a better job. A consultant might meet with the supervisor to suggest strategies or ideas to be used in motivating the employees to do a better job.

HI... A counsellor is a person who is involved in counselling. It refers to a person who is concerned with the profession of giving advice on various things such as academic matters, vocational issues and personal relationships. He is a generally a professional and an expert in his field of functioning. There are different types of counsellors such as rehabilitation counsellor, Marriage and Family counsellor, School counsellor, Mental Health counsellor, online counsellor and Legal counsellor. A consultant, is a person who provides expert advice professionally.