West Frisian boek

← Proto-Germanic *bōks (inherited)

← Proto-West Germanic *bōk (inherited)

← Old Frisian bōk (inherited)

→ Old English boc (cognate)

→ North Frisian buk (cognate)

→ West Frisian wurdboek (compound)

→ West Frisian boekje (affix)

→ West Frisian sjongboek (compound)

→ West Frisian jierboek (affix)

→ German Low German Book (cognate)

→ Dutch boek (cognate)

→ Saterland Frisian Bouk (cognate)

→ Saterland Frisian Bouke (cognate)