Words that come from Proto-Slavic o(b)-

21 words across 14 languages descend from Proto-Slavic o(b)- — including oblast, область, область, област, oblast, oblast, o-, otok.

See the etymology of o(b)- itself →

Slovene (3)

Proto-Slavic (3)

Russian (2)

Czech (2)

Serbo-Croatian (2)

English (1)

Ukrainian (1)

Macedonian (1)

Japanese (1)

Yiddish (1)

Old Church Slavonic (1)

Yakut (1)

Uyghur (1)

Belarusian (1)