How does aṣdarū relate to awradū?

Zuhayr ibn Abī Sulmā: Ḥuṣayn ibn Ḍamḍam, Revenge and the Cost of Bloodshed (Verses 33–42)

• Both mean eating only
• Aṣdarū means leading back; awradū leading to water
• Both mean silence
• The first is greeting; the second prayer