What principally distinguishes semantic from verbal embellishments?

Introduction to ʿIlm al-Badīʿ: Ṭibāq and Muqābalah

• The first chiefly refines relations of meaning; the second chiefly works through wording
• The first contains no wording and the second no meaning
• Verbal always means antithesis; semantic always means rhyme
• Semantic embellishments occur only in prose