What is the difference between dhā hibah/dhāhibah and fatḥ/ḥatf?

Verbal Embellishments: Complete and Incomplete Jinās, Reversal, Derivation and Quasi-Derivation

• The first shares a root; the second only changes vowels
• The first changes word boundaries; the second reorders letters
• Both are necessarily mumāthil
• Both are merely synonyms