Suppose that you have a group of items and you make a hierarchy structure for them. Now, you call this structure, "item hierarchy" or "items hierarchy"?

However, my real phrase is "context hierarchy" vs. "contexts hierarchy"

In general there are some noun-noun constructions which address a group of things. Then the first noun is plural or singular?

  • Although this question is not exactly a duplicate of the question JMB links to, the first sentence in that question can be considered a good answer to this question. So I agree with voting this question as a possible duplicate. – Damkerng T. Jun 21 '15 at 10:12
  • Read Jay's answer in the link carefully, especially the part about "...*of* X". Context hierarchy is ambiguous: does it mean hierarchy within the context, or hierarchy of contexts? Even if it appears to be a concise alternative, using nouns as modifiers isn't always the clearest approach. – Tᴚoɯɐuo Jun 21 '15 at 14:32
  • @TRomano I did, I asked you a different question in another post, why I got this response here! – Ahmad Jun 21 '15 at 14:35
  • @TRomano its hierarchy of contexts, then you suggest to use this exact phrase? – Ahmad Jun 21 '15 at 14:37
  • @Admad: if you're referring to nested contexts (each context can contain one or more sub-contexts, which in turn can contain one or more sub-sub-contents,, which in turn can contain ... to an arbitrary depth of recursion) "recursive context hierarchy" might be clearest or "hierarchy of recursive contexts". – Tᴚoɯɐuo Jun 21 '15 at 14:44