[241,7] So we say: [mutual] opposites are those that are not combined together in a single subject in a single respect at a single time. Each of the (two) things that are not combined in a single subject either is not combined in the way that a single thing is not characterized by them both by agreement [synonymy], through (their) being said of it, through the thing’s being this and that, just as a single thing is living and white together, or in the way that that a single thing is not characterized by them both by derivation [paronymy] also, and that is through its being made impossible, also in virtue of the being in it.