What are these mathematical symbols:
(1) []
(2) {}
Are they all braces? If they are braces, how can I diffrenciate between the two kinds of braces? What are their uses and how do I use them?

What are these mathematical symbols:
(1) []
(2) {}
Are they all braces? If they are braces, how can I diffrenciate between the two kinds of braces?
What are their uses and how do I use them?