This is the 714th most frequent Persian word.
درس
Lesson.
"درس" is used to mean "lesson" or "subject" that is being studied.
من برای امتحان فردا درس میخوانم.
I am studying the lesson for tomorrow's exam.
"درس" signifies a specific piece of educational material presented or discussed.
امروز معلم ما درس جغرافیا را تدریس کرد.
Today our teacher taught the geography lesson.
"درس" conveys the meaning of a moral or educational insight derived from an experience or situation.