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

→ Belarusian век (inherited)
→ Bulgarian век (inherited)
→ Czech věk (inherited)
→ Macedonian век (inherited)
→ Polish wiek (inherited)
→ Russian век (inherited)
→ Russian вѣкъ (inherited(ru/cu))
→ Serbo-Croatian век (inherited)
→ Serbo-Croatian vek (inherited)
→ Serbo-Croatian vijek (inherited)
→ Serbo-Croatian вијек (inherited)
→ Ukrainian вік (inherited)