Flat vs Apartment

Hello,

I'm a learner of English and I seem to be missing the difference between 'flat' and 'apartment'. I'm actually under the impression they are the same thing.
Would anyone please explain what is what?

Thanks,

Tina

[engee30]

A 'flat' is more British than an 'apartment', which is more American. That's it!

[esltutor]

I agree with engee30. I would also add that "flat" is sometimes used to describe a type of apartment. For example, flats in San Francisco, CA are characterized by long hallways. A flat is a long, stretched-out apartment.

I hope that makes sense.

Debra
Teaching ESL to Adults