( Is this called 'open parenthesis'?

) Is this called 'close parenthesis'?
Or is this called 'closed parenthesis'?

I am appreciate your help.

Not English Song but English expression.....by mistake...

( = opening parenthesis

) = closed parenthesis

Yes, you are correct. The symbol "(" is called an "open parenthesis" or simply a "parenthesis." It is used to open and enclose a group of words or numerical expressions in writing.

Similarly, the symbol ")" is called a "close parenthesis" or "closing parenthesis." It is used to close and enclose the group of words or expressions opened by the open parenthesis.

Some people also refer to the ")" symbol as a "closed parenthesis." However, the more commonly used term is "close parenthesis."