What is the difference between the main section of Zara and the TRF section?

[WWYB]

The TRF section seems to be cheaper, what is the difference?

Supposed to be more casual and a bit more 'edgy' whatever that is!!

I think the TRF section is kind of the younger line, sort of what Divided is to H&M.

More casual sounds right, I am casual and I prefer it in there, never been described as edgy though . And I'm not that young either!

I am a frequent visitor to H&M and I have no idea what Divided is, I will go and have a look at the website. How have I never noticed if it is in two sections???? I must be more clueless than I thought.