When a person stands and then sits, their position changes. That does not require a change in the body's permanent dimensions or color.
Triangularity is a shape, discussed among qualities; sitting on a chair is a position arising from the arrangement of bodily parts.
Both may be called forms or configurations in ordinary speech, but their defining features and relevant relations are not identical.
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Highest Genera and the Ten Categories
When a person stands and then sits, their position changes. That does not require a change in the body's permanent dimensions or color.
Triangularity is a shape, discussed among qualities; sitting on a chair is a position arising from the arrangement of bodily parts.
Both may be called forms or configurations in ordinary speech, but their defining features and relevant relations are not identical.