The words are used interchangeably in India and mean very different businesses. A study abroad agent is free to the family because partner universities pay a commission, commonly 10 to 20 percent of first-year tuition, mostly in the UK, Australia, Canada and Ireland. That is a legitimate model, and it decides which universities appear on your list.
Study abroad consultants and overseas education consultants range from the same commission model under a different name to genuine fee-paid advice. The question that separates them is not the job title, it is who pays: ask directly, and ask whether any university on the recommended list pays them.
Platforms sell per-country packages, often with a current undergraduate as the mentor, and publish their prices. An independent counsellor is paid only by the family, works on the profile years before the application, and should be auditable in writing. Our price survey puts twelve providers of each kind side by side with sourced figures.
How to choose between them sets out the questions worth asking, and what counselling in India costs and includes covers our own version of it.