«والحملية ما لا ينحل إلى قضيتين»
A categorical proposition is one that does not resolve into two propositions.
In “Zayd is standing,” we may distinguish the concepts Zayd and standing; but “Zayd” alone is not a complete assertion, nor is “standing” in this context an independent statement.
Dividing words or concepts and dividing complete propositions are different operations. A categorical expresses one central judgment uniting its subject and predicate. That is what distinguishes its structure from a conditional.