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

→ Bulgarian Дунав (inherited)
→ Czech Dunaj (inherited)
→ Greek Δούναβης (cognate)
→ Macedonian Дунав (inherited)
→ Polish Dunaj (inherited)
→ Russian Дунай (inherited)
→ Serbo-Croatian Dunav (inherited)
→ Serbo-Croatian Дунав (inherited)
→ Slovak Dunaj (inherited)
→ Slovene Dunaj (inherited)
→ Ukrainian Дунай (inherited)