1. people who provide professional advice and guidance, especially on personal or psychological matters
Usage: plural of counsellor; British spelling
2. lawyers who give legal advice or represent clients in court
Usage: British legal term; formal
3. people who supervise and guide children at summer camps or similar programs
Usage: camp counsellors

Examples

• The school hired additional counsellors to help students with college applications.
• Marriage counsellors often work with couples experiencing relationship difficulties.
• The legal team included several experienced counsellors specializing in corporate law.
• Camp counsellors organized activities for the children throughout the day.
• Mental health counsellors provide support for people dealing with anxiety and depression.
• The counsellors met weekly to discuss their clients’ progress.
• Young counsellors at the summer camp were trained in first aid and safety procedures.