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

→ Afrikaans twintig (inherited)
→ Old English twentig (inherited)
→ German zwanzig (inherited)
→ West Frisian tweintich (inherited)
→ Old Saxon twentig (inherited)
→ Vilamovian cwencik (inherited)
→ Yiddish צוואַנציק (inherited)