Proto-Indo-European *bʰerHǵs

→ Belarusian бяроза (inherited)

→ Czech bříza (derived)

→ Lower Sorbian brjaza (inherited)

→ Faroese bjørk (derived)

→ Icelandic björk (derived)

→ Luxembourgish Bierk (derived)

→ Latvian bērzs (derived)

→ Norwegian Bokmål bjørk (derived)

→ Norwegian Nynorsk bjørk (derived)

→ Old East Slavic береза (derived)

→ Old Prussian berse (derived)

→ Serbo-Croatian breza (derived)

→ Slovak breza (inherited)

→ Slovene breza (derived)

→ Swedish björk (derived)