Many thanks for shedding light on this issue. So now we know for sure that there is no distinction intended between „broader element / narrower element" and „element supertype / element subtype". This is very helpful.
Experts in the German-speaking community came across this question while working on our future cataloging handbook. What made it even more confusing to us was the fact that the subtypes are listed as an option under prerecording (e.g., for Manifestation: sound characteristic) . This makes these elements stand out much more prominently than if they are just given as narrower elements at the bottom of the page. Also, isn't the information presented redundantly in these cases?
Let me also thank you for sharing the discussion within the RSC. Personally, I think that terms should be used consistently in a cataloging standard--the same thing should always be called by the same name. However, I would much prefer to keep „broader element / narrower element". Not only is this easier to understand, but there is also a risk that „element supertype / element subtype" would often be confused with „superelement / subelement".
I wonder what exactly was the argument against „broader / narrower element"? To me, this is perfectly acceptable terminology and not in any way dated. We're all familiar with broader and narrower terms from the thesaurus, and I believe this terminology is even based on an ISO norm. And while it's true that „sub-type" appears in the LRM a couple of times (both as a noun and as a verb), „super-type" doesn't. So I don't think it's absolutely necessary to use this wording for RDA.
Well, I'll certainly be on the lookout for changes in this area.
I agree with Heidrun. There's no reason to replace a well-known and understood term with a new one that needs explanation and discussion to be understood.
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