To add to tchrist’s answer, since the question is a general question about procedure...
You can (and probably should) edit the question to make clear why it’s not answered by the nominated duplicate.
I saw Question X which seems superficially similar, but all the answers there talk about hewages whereas this question is actually asking about flurbles.
You then need to expand on that in the text of the question itself to make it clear that you are asking about flurbles or whatever, adding examples too as they always help to strengthen a case.
But — especially if there are not already any answers — don’t simply add that (particularly after a subtitle “Edit:” since the history is available anyway). Change the question to make it clear what you are asking about, so that it cannot be a duplicate.
Once that’s done, ask a question on Meta as here, as that will get the greatest exposure. Questions which are edited after they have been closed do go into a review queue, too, which is another reason for editing.
If a question has been closed by a moderator vote then it can only be reopened by a moderator vote, but even then, raising on Meta — having made the question clearly not a duplicate — will allow others to comment and discuss whether it’s still a duplicate or not.