1)
From what honor must Mo'av descend?
1.
Radak: It is from its previous honor - it did not lack anything.
2)
What is the meaning of "u'Shvi va'Tzama"?
1.
Radak: Dwell in exile, where you will thirst for all good. The Kesiv is Yoshvi, to teach that you will be among those who dwell in thirst.