What is the difference between an apartment and a flat?

I love my Dachshie: What is the difference between an apartment and a flat?
Don’t say that a flat is British and an apartment us American. I’ve been looking at apartments online, and I’ve noticed that a few of the complexes offer both flats and apartments, but the flats seem to be cheaper. Why is that? I never even knew there was a difference.

Answers and Views:

Answer by Chris
Then I guess there like studio apartments/ flats or efficiency apartments there smaller and more self contain one large room for your living space, bedroom and your kitchen no walls to separated them and your bathroom

Answer by NoraCat
A flat is all on one floor (it’s “flat”), but an apartment could be on more than one floor and have stairs connecting the floors.

However, 90% of the time, they really mean the same thing – a place you can rent in a larger building; it’s just that “flat” is more of a british word and “apartment” is more an American word, but they mean the same thing.