Nunation

The noon is a title for Prophet Jonah, Eunice.

Also, tanween, the two, dammatan or dammatan, gives the word noon meaning Also, to add the tanween was to mark a word with nunation, al-tanween, munawanun.

It's marked with the tanween, munawan.

Nunan-niswa, the feminine attribute, when the nun is added to a word, it gives it specifically to the feminine.

Also, poetry that its verses end with the noon, it's called An-Nuniyah.

Like for example, Nuniyah Omar ibn al-Farid.

See the Omar ibn al-Farid, An-Nuniyah, Al-Ta'iyah, and so on.

Ghayru Munawan, they do not use the diacritical tashkeel of the tanween, the dhammatan.