Difference between 2 majors

Answered

To elaborate on what @dy2024 has already said. With a business admin degree you're going to cover a bunch of different topics like finances, marketing, accounting, and others. You'll receive a strong set of foundational skills but these skills are going to be focused mainly on whichever country you are taking the classes in.

International business is similar but, unsurprisingly, more focused on developing skills which will allow you to do business around the globe. So you'll be learning about multi-national businesses and how they conduct business around the world. Part of it will be learning the ins-and-outs of how these other countries operate businesses: their economic and legal system, financial system, politics, etc. You'll also most likely be required to study abroad at some point which is cool but can be difficult if you are hoping to double major or something. So it can be a lot of learning how social and political factors affect businesses, risks involved with international business, learning about cultures and customs and how those impact business decisions, etc.