This is the 3841st most frequent Arabic word.
اللذان
"The two (masculine)"
The word 'اللذان' acts as a relative pronoun referring to two masculine persons.
اللذان يعملان في الشركة هما أخوان.
The two who work at the company are brothers.
The word 'اللذين' connects the two books mentioned with the description following it, being a masculine dual relative pronoun in the accusative case.
قرأت الكتابين اللذين أوصيتني بهما.
I read the two books that you recommended to me.
The word 'اللذان' specifies and introduces the clause describing the two male students, demonstrating its role in linking a dual subject with additional information.