What's a "Tourist/Visit/Business" visa?

They are very much not all the same!

Let me give you an overview of the different types of visas in case you are confused - there are tourist visas, for people coming as tourists, family visitor visas for people visiting family, business visitor visas for people coming to do business (making investments etc), study visas, transit visas, sportsmen visas etc.

They are all different types of visas issues for different purposes.