This is the 539th most frequent Persian word.
خودشان
"Themselves" (reflexive pronoun).
In this sentence, 'خودشان' emphasizes that the decision to travel was made by themselves, showing self-reliance.
آنها خودشان تصمیم گرفتند به سفر بروند.
They themselves decided to go on a trip.
Here, 'خودشان' specifies that the students are responsible for independently reviewing the lessons.
دانشآموزان باید خودشان درسها را مرور کنند.
Students should revise the lessons themselves.
In this example, 'خودشان' highlights the children's independence in preparing the cake.