زَيْدٌ حَسَنٌ
Zayd is good. The sentence is complete, but good in what respect?
زَيْدٌ حَسَنٌ وَجْهًا
Zayd has a handsome face. وَجْهًا identifies the respect meant.
زَيْدٌ حَسَنٌ ذَوْقًا
Zayd has good taste. ذَوْقًا gives a different respect.
Here tamyiz removes ambiguity from the meaning of the whole sentence.
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زَيْدٌ حَسَنٌ
Zayd is good. The sentence is complete, but good in what respect?
زَيْدٌ حَسَنٌ وَجْهًا
Zayd has a handsome face. وَجْهًا identifies the respect meant.
زَيْدٌ حَسَنٌ ذَوْقًا
Zayd has good taste. ذَوْقًا gives a different respect.
Here tamyiz removes ambiguity from the meaning of the whole sentence.