different between parenthetical vs nonparenthetical

English

parenthetical (not comparable)

using, containing, or within parenthesis
the parenthetical portion of the sentence "Bob (my best friend) works in finance"
that explains or qualifies something
that is incidental

parenthetical (plural parentheticals)

A word or phrase within parentheses.
(screenwriting) A descriptor or modifier enclosed within parentheses and put, indented, in a line of dialogue to describe how it should be acted or directed onscreen.

non- +? parenthetical

nonparenthetical (not comparable)

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