This is the 1480th most frequent Arabic word.
الحديدية
"The iron-bound" or "metallic," often referring to something made of iron or related to iron.
Here, 'الحديدية' refers to 'railways' and is used as an adjective describing modern rail infrastructure.
القطارات في هذا البلد تستخدم السكك الحديدية الحديثة.
Trains in this country use modern railways.
In this sentence, 'الحديدية' (as 'الحديدي' masculine form) refers to an iron material, characterizing the fence as being made of iron.
السور الحديدي يحمي الحديقة من الحيوانات.
The iron fence protects the garden from animals.
Here, 'الحديدية' metaphorically symbolizes extreme durability and resilience, describing a conceptual quality.