What is salient in قَاتَلَ زَيْدٌ عَمْرًا?

Comprehensive Final Revision: Root Classes, Morphological Changes, Conjugations, Nouns and Verb-Form Semantics

• Pretence; both nouns are subjects
• Participation; Zayd subject and ʿAmr object
• Form VII; both passive subjects
• Form X; seeking food