Nothing to do with the case and Nonessential

Nonessential and nothing to do with the case are semantically related. in unimportant topic. In some cases you can use "Nonessential" instead an adverb phrase "Nothing to do with the case".

Nonessential adjective - Not needed by the circumstances or to accomplish an end.

Nothing to do with the case and nonessential are semantically related. You can use "Nothing to do with the case" instead an adverb "Nonessential".