Whats the difference between hardcover books and hardback books?

Question

My local book website lists them as different editions.

Answer 1

They are the same.  Both reliable and durable and much more preferable than paperbacks...in my opinion!

Answer 2

To my knowledge, there's not, I don't know why they'd list them different.  

Answer 3

Both names can be used interchangeably. But, "hardcover" is the name publishers and agents use with greater frequency.

Answer 4

They are the same thing, in my book that is.