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Examples of #2 that do not neatly fit into #1 are, say, generic "wall" and "column". They frequently serve as "supports" in architecture, but are near-impossible to pin into the proposed "roller, pinned, fixed, hanger and simple support" framework. The latter is the structural sense is not even a "support", but a "member".
The solution offered in some languages is to split the article into two (numbers correspond to the items above):