Old Norse bógr

← Old English bōg (cognate)

← Proto-Germanic *bōguz (inherited)

← Old High German buog (cognate)

← Proto-Indo-European *bʰeh₂ǵʰús (inherited)

→ Old English bog (cognate)

→ Danish bov (inherited)

→ Westrobothnian boy (inherited)

→ Icelandic bógur (inherited)

→ Norwegian Bokmål bog (derived)

→ Norwegian Nynorsk bog (inherited)

→ Scots bou (derived)

→ Swedish bog (inherited)