This is the 107th most frequent Persian word.
تعداد
"تعداد" means "number" or "quantity."
This sentence uses 'تعداد' to indicate a large quantity or count of books present in the library.
تعداد زیادی کتاب در کتابخانه وجود دارد.
There are many books in the library.
Here, 'تعداد' specifies the exact count of students in the class.
تعداد دانشجویان این کلاس بیست نفر است.
The number of students in this class is twenty.
In this example, 'تعداد' refers to the act of determining the count of participants in an event.