you can't casted 'nouns'
زمن from that sentence , it will have no means . but you can casted 'adjective'
طويل
منذ is 'ظرف زمان' time-dedicated pronoun so we can say "
منذ زمن " and this can handle a "short" or "long" "time" because you didn't specified .
shafaq the example يأخذ كل
سفينة سليمة the adjective
سليمة is casted but not the noun
سفينة "ship" .
"الموصوف noun" here are very different
2.... و عندهم
حور قاصرات الطرف..Here there is two 'nouns'
حور and الطرف last قاصرات are 'adjective' .
حور in this place is 'إسم مضمر'
ref ...