What is the difference between κοπέλα and κορίτσι?
They're almost the same. "κοπέλα" is more often used when the meaning is "young woman" than when it is "teenager or younger", with "κορίτσι" it's the other way around.
´young woman´ is correct, but marked wrong. The answer given is ´young lady´, which seems dubious to me - ´νεα κυρία'?
Young woman is marked wrong