Proto-Slavic *bьrdo

→ Bulgarian бърдо (inherited)

→ Czech brdo (inherited)

→ Lower Sorbian bardo (inherited)

→ Finnish pirta (borrowed)

→ Hungarian borda (cognate)

→ Macedonian брдо (inherited)

→ Polish bardo (inherited)

→ Polabian b’ordü (inherited)

→ Romanian Birda (derived)

→ Romanian Bârda (derived)

→ Russian бёрдо (inherited)

→ Serbo-Croatian брдо (inherited)

→ Serbo-Croatian brdo (inherited)

→ Slovak brdo (inherited)

→ Slovene brdo (inherited)

→ Old Armenian բրդեմ (cognate)

→ Old Polish bardo (inherited)

→ Slovincian bjȧ̃rḍɵ (inherited)