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

→ English open (inherited)
→ English open (derived)
→ Afrikaans oop (inherited)
→ Old English open (inherited)
→ Old English openian (mention)
→ Danish åbne (mention)
→ Danish offentlig (derived)
→ Danish åben (derived)
→ German offen (inherited)
→ Middle Dutch open (inherited)
→ Middle English open (inherited)
→ West Frisian iepen (inherited)
→ Westrobothnian yppe (derived)
→ Old High German offan (inherited)
→ Alemannic German offe (inherited)
→ Icelandic opinn (derived)
→ Norwegian Bokmål åpen (derived)
→ Dutch open (inherited)
→ Norwegian Nynorsk open (derived)
→ Old Saxon opan (inherited)
→ Pennsylvania German uffne (inherited)
→ Scots apen (inherited)
→ Scots apen (derived)
→ Saterland Frisian eepen (inherited)
→ Swedish öppen (inherited)
→ Swedish offentlig (derived)
→ Yiddish אָפֿן (inherited)