Ordinary tanwīn is a noun diagnostic. Poetic tarannum is exceptional and can attach to endings of nouns, verbs, and—in wider grammatical discussions—even particles.
Opening interactive controls...
Why Tarannum Is Exceptional
Tanwīn: Five Types, Their Function, and Omission
Ordinary tanwīn is a noun diagnostic. Poetic tarannum is exceptional and can attach to endings of nouns, verbs, and—in wider grammatical discussions—even particles.