This is the 437th most frequent Arabic word.
فرض
Obligation; duty; imposition.
Here, 'فرض' means 'assigned' or 'required', referring to imposing a task or obligation.
فرض المعلم واجبات على الطلاب.
The teacher assigned homework to the students.
In this sentence, 'فرض' refers to a religious obligation or duty.
الصلاة فرض على كل مسلم.
Prayer is an obligation for every Muslim.
Here, 'فرض' is used in the sense of 'imposed', signifying enforcing laws or rules.