köken: Etymology tree Proto-Indo-European *bʰer- Proto-Indo-European *bʰéreti Proto-Balto-Slavic *bírāˀtei Proto-Slavic *bьrati Proto-Indo-European *-kos Proto-Slavic *-kъ Proto-Slavic *borkъ Old Church Slavonic бракъ (brakŭ) Bulgarian брак (brak) Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Church Slavonic -ьнь (-ĭnĭ) Bulgarian -ен (-en) Bulgarian брачен From брак (brak) +…