This is the 820th most frequent Persian word.
فرزند
Child; offspring.
Here, 'فرزند' is used to denote a child (son or daughter) of the family.
او تنها فرزند خانواده است.
He is the only child of the family.
In this sentence, 'فرزند' is used in a general sense to refer to any child or offspring.
هر فرزند باید احترام به والدین خود را بیاموزد.
Every child should learn to respect their parents.
Here, 'فرزند' specifies a member of the family, particularly the youngest one.