This is the 2702nd most frequent Arabic word.
انهيار
Collapse; breakdown.
The word 'انهيار' is used here metaphorically to describe the breakdown or dysfunction of a system.
شهدت المدينة انهياراً في نظام المواصلات بعد العاصفة.
The city witnessed a collapse in the transportation system after the storm.
In this sentence, 'انهيار' refers to the physical falling or crumbling of the mountains.
كان انهيار الجبال نتيجة للزلازل المتكررة.
The collapse of the mountains was a result of the recurring earthquakes.
Here, 'انهيار' is applied in a psychological context, describing a deep emotional state.