استن or هستن
What is the difference between and ?
& When to use one not the other ?

Question

استن or هستن
> What is the difference between  and  ? 
& When to use one not the other  ?

Answer

As I know 
Almost have the same meaning but:
1. هست is easier to use and is used more because of easy tongue.
2. هست has two meanings: firstly, "Be" and another one "Exist" but  است just means "Be".

Answer

both of them have same meaning but "ast" is more formal than "hast"

good luck!

Answer

same meaning. however است is more formal

Answer

They surely are infinitives, just not commonly used as such.

Answer

yeah, ok.
I meant "است" and "هست" where did that "ن" came from ?!! lol
sorry, my bad