Proto-Indo-European *h₂ékʷeh₂

→ German Aue (derived)

→ Basque hego (derived)

→ Latin aqua (inherited)

→ Latin Treveri (mention)

→ Norwegian Bokmål øy (inherited)

→ Norwegian Bokmål Karmøy (inherited)

→ Norwegian Bokmål Karlsøy (inherited)

→ Norwegian Bokmål ABC-øyene (inherited)

→ Norwegian Bokmål Karlsøya (inherited)

→ Norwegian Bokmål Karlsøya (inherited)