ari ▁( A fg han ▁Pers ian ) ▁and ▁Iran ian ▁Pers ian . ▁ ▁D iffer ences ▁between ▁Iran ian ▁and ▁Afghan ▁Pers ian ▁There ▁are ▁ph on ological , ▁lex ical , ▁and ▁morph ological ▁differences ▁between ▁Afghan ▁Pers ian ▁and ▁Iran ian ▁Pers ian . ▁There ▁are ▁no ▁significant ▁differences ▁in ▁the ▁written ▁forms , ▁other ▁than ▁regional ▁id iom atic ▁phr ases . ▁ ▁Ph on ology ▁The ▁principal ▁differences ▁between ▁standard ▁Iran ian ▁Pers ian , ▁based ▁on ▁the ▁dialect ▁of ▁the ▁capital ▁Te h ran , ▁and ▁Afghan ▁Pers ian , ▁as ▁based ▁on ▁the ▁Kab ul ▁dialect , ▁are : ▁▁ ▁The ▁mer ging ▁of ▁maj h ul ▁v ow els ▁ ▁and ▁ ▁into ▁ ▁and ▁ ▁respectively ▁in ▁Iran ian ▁Pers ian , ▁whereas ▁in ▁Afghan ▁Pers ian , ▁they ▁are ▁still ▁kept ▁separate . ▁For ▁instance , ▁the ▁ident ically ▁written ▁words ▁ ش ی ر ▁ ▁' l ion ' ▁and ▁' mil k ' ▁are ▁pron ounced ▁the ▁same ▁in ▁Iran ian ▁Pers ian ▁as ▁, ▁but ▁ ▁for ▁' l ion ' ▁and ▁ ▁for ▁' mil k ' ▁in ▁Afghan ▁Pers ian . ▁The ▁long ▁v owel ▁in ▁ ز و د ▁" quick " ▁and ▁ ز و ر ▁" strong " ▁is ▁realized ▁as ▁ ▁in ▁Iran ian ▁Pers ian , ▁in ▁contrast , ▁these ▁words ▁are ▁pron ounced ▁ ▁and ▁ ▁respectively ▁by ▁Pers ian ▁speak ers ▁in ▁Afghan istan . ▁ ▁The ▁treatment ▁of ▁the