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

→ Belarusian плоскі (inherited)
→ Polish płaski (derived)
→ Romanian ploșniță (mention)
→ Russian площадь (mention)
→ Albanian flashkët (cognate)
→ Old Polish płoski (inherited)