Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *dʰewb-

→ English duck (derived)
→ English deep (mention)
→ English dimple (derived)
→ English Dover (mention)
→ Afrikaans diep (inherited)
→ Old English deop (root)
→ Belarusian дно (mention)
→ Czech dno (mention)
→ German Topf (derived)
→ German taufen (root)
→ German tief (root)
→ German Taufe (root)
→ Middle English depe (root)
→ Spanish Duero (derived)
→ Faroese djúpur (root)
→ Faroese djúpur (mention)
→ Faroese doypa (root)
→ Faroese dýpd (root)
→ West Frisian djip (derived)
→ Old High German tiof (root)
→ Ancient Greek ἄβυσσος (root)
→ Ancient Greek Πυθώ (mention)
→ Ancient Greek βυθός (root)
→ Ancient Greek βυθός (derived)
→ Icelandic djúpur (root)
→ Icelandic djúpur (derived)
→ Icelandic dýpt (root)
→ Luxembourgish deefen (root)
→ Luxembourgish déif (derived)
→ Latvian dobs (derived)
→ Latvian dibens (root)
→ Norwegian Bokmål djup (derived)
→ Norwegian Bokmål dyp (root)
→ Norwegian Bokmål dyp (derived)
→ Norwegian Bokmål dybde (root)
→ Norwegian Bokmål døpe (root)
→ Low German döpen (root)
→ Dutch diep (root)
→ Dutch diep (derived)
→ Dutch dopen (root)
→ Dutch diepte (root)
→ Dutch doop (root)
→ Norwegian djup (root(no/nb))
→ Norwegian djup (root(no/nb))