What extra feature distinguishes muraṣṣaʿ from mutawāzī?

Sajʿ and Muwāzanah: Rhymed Prose, Rhythmic Endings, and Balance

• Muraṣṣaʿ never shares an ending
• Muraṣṣaʿ occurs only in verse
• Several paired words match in pattern and rhyme in muraṣṣaʿ
• Opposed meaning alone defines muraṣṣaʿ