Firstly, Greek and Latin are very different languages and a name can't just be Latin/Greek - it has to originate from one or the other.
Secondly, that is not what
Nora means. That meaning is a garbled version of two possible sources for the name -
Honora, meaning 'honour', and
Eleanor, which as a version of
Helen is sometimes given as meaning 'light'. It doesn't. It possibly means 'torch', and there are another couple of possible meanings. It is by no means certain that
Eleanor comes from
Helen, so that meaning for
Nora is even more doubtful.
When you look at the hard evidence, the resemblance between
Nora and Nor /
Nur is clearly a co-incidence.
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