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

→ English pierogi (derived)
→ Old Church Slavonic пиръ (inherited)
→ Macedonian пир (inherited)
→ Polish pieróg (derived)
→ Romanian pir (derived)
→ Russian пирог (derived)
→ Russian пир (inherited)
→ Ukrainian пиріг (derived)