1.9M results: lisp "parentheses" -brackets
800k results: lisp "brackets" -parentheses
I admit result counts are more similar if lisp is replaced with “python” or “golang”, but square brackets come up more often for those languages.
Disclaimer: I am searching from google.co.nz, and I presume search result counts are not a great proxy measurement for actual usage!
If you’re in a context where only one of the bracket types would normally be used, you can just call them “brackets.” Since many people never really use [] and {}, “brackets” casually refers to ().
To disambiguate, you can call () “open brackets”, [] “square brackets”, and {} “curly brackets.”
And for the cherry on top, {} can be called “curly braces.” That’s my preferred term for them. But it’s awkward to call [] “square braces” and () “open braces” :)
I have never heard anyone call () "brackets". Is it more regional than just the US maybe?
I've never seen or heard any programmer call () brackets or braces. It's always parentheses. I may have heard a math or science teacher call them all brackets or braces, however, since they are synonymous there outside of odd exceptions like interval notation.
Together they are just brackets, not open brackets.