  Here, Suárez repeats that categories are dispositions, but he adds another important term, ‘coordination.’ A category is not properly speaking a genus, but rather the coordination or, we might say, the arrangement of genera according to a pattern of essential inclusion which goes from the lowest to the highest (see Ockham 1991, V, q. 21, for a precedent to this language). We take it that Suárez means to say that categories such as quality and quantity, for example, are not themselves genera, but ways in which genera are related. Quality tells us how color is related to red and blue on the one hand (i.e., lower species), and to texture and knowledge (i.e., other genera) on the other. Red and blue are both colors, but different from rough (a kind of texture) and knowledge of grammar (a kind of knowledge). But all these are qualities and different from three-inches wide, which is instead a quantity. Quality and quantity, then, do not function like genera, for a genus is signified by any predicate that expresses what a subject is (e.g., in the sentence, ‘Man is an animal,’ ‘animal’ is the genus of man), and categories do not function in this way. Following Porphyry's example, the highest or supreme (generalissimum) genus is substance.