Sure, but you also have:
Germanic: Sun, Sonne, Zon, Sol
Romance: Sole, Soleil, Soare, Sol
Slavic: Sunce, Sonce, Solnce, Slunce, Slnko, Slonce, Slnce, Sonca
Baltic: Saule
While in Persian the word is khor-sheed which already implies that they were already divided from the above mentioned...