"여동생은 소아과학 아니면 내과학을 공부하고 싶어해요."
Translation:My little sister wants to study pediatrics or internal medicine.
This is my first time seeing that word. I'm used to pediatrics or podiatry. That might be the limitation of their accepted answers.
What is the difference between using 아니면 and 또는 for "or"? Are they used interchangeably?
doesnt 아니면 means she doesn't want to study pediatrics but internal medicine instead?