What is the difference between return and desplegar (I don't know how to say it in English) when I'm in functions

Answer 1

I still don't get it. It's the same thing or one is more convenient than the other?

Answer 2

I will appreciate that man

Answer 3

I really appreciate this. Now I get this better. Thank you for your supporting and your time to explain this.
I think that my English is kind of good but as you say if it isn't your native language it can turn a little confusing sometimes