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

→ Belarusian пуп (inherited)
→ Bulgarian пъп (inherited)
→ Lithuanian pumpuras (cognate)
→ Macedonian папок (inherited)
→ Romanian pup (derived)
→ Russian пуп (inherited)
→ Serbo-Croatian pup (inherited)
→ Serbo-Croatian пуп (inherited)
→ Ukrainian пуп (inherited)