This is the 328th most frequent Arabic word.
الكهرباء
Electricity.
Here, 'الكهرباء' is used as a subject in a general definition about its function.
الكهرباء هي مصدر للطاقة التي نستخدمها يومياً.
Electricity is a source of energy that we use daily.
In this sentence, 'الكهرباء' is the object of action, indicating the electrical supply.
انقطعت الكهرباء عن المنزل بسبب العاصفة.
The electricity in the house went out because of the storm.
The word 'الكهرباء' here refers to the resource that needs to be saved.