Siyyán. The possibility of the existence of one thing with another.
Ḍiddán. The impossibility of the existence of one thing simultaneously with the existence of another.
Ghayrán. The possibility of the existence of either of two things, notwithstanding the annihilation of the other.
Jawhar. The basis (aṣl) of a thing; that which is self-subsistent.
`Araḍ. That which subsists in jawhar (substance).
Jism. That which is composed of separate parts.
Su´ál. Seeking a reality.
Jawáb. Giving information concerning the subject-matter of a question (su´ál).
Ḥusn. That which is conformable to the (Divine) command.
Qubḥ. That which is not conformable to the (Divine) command.