Jingle, with one "i"
and
Jangle


http://her.oxfordjournals.org/content/17/5/670.full

Theory-comparison research may help behavioral and social scientists engaged in health behavior research to avoid Marsh’s concept of the ‘jingle-jangle’ fallacy (Marsh, 1994). Theory comparison can inform if the same constructs are being addressed but labeled differently (jingle) or if the theories operationalize the same construct differently (jangle).


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Note added at 51 mins (2012-07-17 15:58:29 GMT)
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https://docs.google.com/viewer?a=v&q=cache:T56qSu4dWw4J:www....

page 5

full explanation of
jingle
and
jangle

you may have to keep the English terms and translate their meanings into Greek

I don't envy you your task:)

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Note added at 57 mins (2012-07-17 16:04:51 GMT)
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1832179/


A facet of this problem is known as the 'jingle-jangle fallacies': the jingle fallacy being that just because things are called the same name it does not mean that they are the same thing; the jangle refers to the issue that because things are called different things it does not necessarily mean they are different [5]


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Note added at 58 mins (2012-07-17 16:05:34 GMT)
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At least I can understand now what jingle and jangle is all about! In simple terms:)