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Names of first and second intention. Cicero, Book 1, Academica Quaestiones. Regarding the arts in grammar, dialectic, and rhetoric. See chapter 30 at the end concerning the varied meaning of words. Names of first intention belong to things; those of second intention belong to names. The former properly belong to things; the latter are indices of other names.

They are called predicables and predicaments, concerning which we must admonish, before we discourse upon them, that there is a twofold ratio of names. Some are commonly called of first intention or imposition, which were first imposed upon things and to which they properly belong, and by which we can express senses when speaking. Others are of second intention, which we use in the teaching of the arts, which Boethius calls names of names, because they are indices of other names. Such are noun, pronoun, verb, supine, among the grammarians, and here genus, species, difference, proper, and accident. The name dog, a word known to all for a living creature, is called a word of first intention; but because the dialectician considers this name as accommodated to all dogs, he calls that word a species, which is now commonly called of second intention.

Regarding words which are called predicables:
Words, or grades of words, and their distinctions, of which some are smaller, some larger, some equal. Division of words, authored by Porphyry, chapter on genus. The individual properly so called. To be said of one individual, species, genus, difference, proper, and accident. IV.

PREDICABLES, more correctly called in Greek katēgoroumena things predicated or katēgorēmata predications, or phōnai voices/terms, and in Latin voces words or grades of words, contain the distinctions of names. They are called predicables because they are said of other things and are attributed to things as if they were related. Words, as Porphyry writes, are said either of one or of many.

Regarding the individual. V.

THOSE which are said of one are called individuals, and signify only one thing, as for example to mark a specific action.