This is the 443rd most frequent Arabic word.
إثر
"إثر" means "immediately after" or "as a result of."
Here, the term "إثر" indicates a sequence, marking the company's new project as a result of its prior success.
بدأت الشركة مشروعًا جديدًا إثر نجاحها الكبير في السوق.
The company initiated a new project following its great success in the market.
Here, "إثر" is used to denote a temporal link, indicating that the new guidelines came right after the mentioned incident.
صدرت التعليمات الجديدة إثر حادثة الأمس المقلقة.
New guidelines were issued following yesterday's concerning incident.
In this sentence, "إثر" signifies causation, connecting the students' reaction to the administration's action as a direct consequence.