←
Proto-Indo-Iranian *wŕ̥kas (inherited)
←
Proto-Indo-European *wĺ̥kʷos (inherited)
←
Proto-Iranian *wŕ̥kah (inherited)
←
Northern Kurdish gur (cognate)
←
Northern Kurdish gurg (mention)
←
Mazanderani ورگ (cognate)
←
Middle Persian 𐭢𐭥𐭫𐭢 (inherited)
←
Old Persian 𐎺𐎼𐎣 (inherited)
→
Persian گرگان (mention)