زَيْدٌ حَاضِرٌ
Zayd is present.
This is a declarative assertion: its content can agree or disagree with reality. Compare it with هَلْ زَيْدٌ حَاضِرٌ؟
Is Zayd present?
This is interrogative inshaʾ: the speaker asks for information instead of asserting presence. Sharing the same subject and predicate does not make the communicative act identical.