:
|
Brackets:
( )
Square Brackets:
[ ]
|
Incorrect.
( ) = parenthesis.
[ ] = brackets.
Brackets are used inside a parenthesis, which is why they are shaped differently. It's so that you can do (this and then [mention something else here] while keeping it all seperate and less confusing).
'Bracket' is sometimes used as a loose term to describe parenthesis and brackets in general. This is an incorrect but noted usage.