Proto-Indo-European *kers-

→ Old English hors (derived)

→ Middle English hors (derived)

→ Persian چرک (mention)

→ Faroese hors (root)

→ Faroese hors (derived)

→ Faroese ross (derived)

→ Old Norse hross (derived)

→ Russian гусар (mention)

→ Serbo-Croatian гусар (derived)

→ Serbo-Croatian gusar (derived)