This is the 1207th most frequent Arabic word.
مرض
"مرض" in English means "disease" or "illness."
The word 'مرض' here refers to the concept of an illness or disease that affects a person's health.
أصيب الرجل بمرض خطير.
The man contracted a serious illness.
In this sentence, 'مرض' is used to describe a specific type of illness, which is measles.
انتشر مرض الحصبة بين الأطفال.
Measles spread among the children.
The word 'أمراض' is the plural form of 'مرض,' indicating multiple diseases potentially caused by pollution.