Ha - I'm not really sure why the different terminology was used - it confused me too when I was first looking at it. I could be wrong but for some reason I think once something on that specific page (and maybe others) are done a certain way, it's not really easy to edit that. But I could be wrong!
Making the name consistent will require changes in multiple places more or less simultaneously which is tricky with so many moving parts. I'll do it on a weekend sometime when the disruption won't be as big of a nuisance.
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