Equivocal terms have the same name, but not the same definition, as man,—both the animal and the picture. Of Equivocal terms, some receive their Equivocal name fortuitously, as Ajax, the Locrian, and the Salaminian; and some from intention; and of these, some from resemblance, as man both the living and the painted; and some from analogy, as the feet of Ida, and our feet, because they are beneath; some from action, as the foot of a vessel, by which the vessel sails, and our foot, by which we move. Equivocal terms are designated from the same and to the same; as the book and scalpel are called surgical, both from the surgeon who uses them, and with reference to the surgical matter itself.