Proto-West Germanic *bōk

→ English book (inherited)

→ Bavarian Buach (inherited)

→ German Buch (inherited)

→ Middle English booke (inherited)

→ North Frisian bök (derived)

→ West Frisian boek (inherited)

→ Middle Low German bok (inherited)

→ Old High German buoh (inherited)

→ Hunsrik Buch (inherited)

→ German Low German Book (inherited)

→ Dutch boek (inherited)

→ Old Saxon bok (inherited)

→ Saterland Frisian Bouk (inherited)

→ Yiddish בוך (inherited)