Proto-Slavic *orěxъ

→ Belarusian арэх (inherited)

→ Bulgarian орех (inherited)

→ Czech ořech (inherited)

→ Lower Sorbian wórjech (inherited)

→ Macedonian орев (inherited)

→ Polish orzech (inherited)

→ Polabian vrex (inherited)

→ Romanian Oravița (borrowed)

→ Romanian Oreavu (derived)

→ Romanian Oreavul (derived)

→ Romanian Orevița Mare (derived)

→ Romanian Rahova (derived)

→ Russian орех (inherited)

→ Serbo-Croatian орах (inherited)

→ Serbo-Croatian orah (inherited)

→ Slovak orech (inherited)

→ Slovene oreh (inherited)

→ Silesian ôrzech (inherited)

→ Ukrainian горіх (inherited)