Quintilian Institutio Oratoria 8.2.8

[8] are employed as names of fish, to mention no other cases. ¹ The third kind of propriety is found in the case where a thing which serves a number of purposes has a special name in some one particular context; for example, the proper term for a funeral song is naenia, and for the general's tent augurale. Again, a term which is common to a number of things may be applied in a proper or special sense to some one of them. Thus we use urbs in the special sense of Rome, venales in the special sense of newly-purchased slaves, and Corinthia in the special sense of bronzes, although there are other cities besides Rome, and many other things which may be styled venales besides slaves, and gold and silver are found at Corinth as well as bronze. But the use of such terms implies no special excellence in an orator.