Old Church Slavonic боукꙑ

← Proto-Slavic *buky (inherited)

→ English buky (borrowed)

→ Belarusian азбука (compound)

→ Old Church Slavonic боукарь (suffix)

→ Romanian buche (borrowed)

→ Romanian azbuche (mention)

→ Romanian azbucoavnă (mention)

→ Romanian bucoavnă (mention)

→ Romanian bucvariu (mention)

→ Russian азбука (compound)

→ Serbo-Croatian buki (derived)

→ Serbo-Croatian буки (mention)

→ Ukrainian азбука (mention)