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

→ Belarusian чорны (inherited)
→ Bulgarian черен (inherited)
→ Czech černý (inherited)
→ Czech črn (inherited(cs/sl))
→ Kashubian czôrny (inherited)
→ Old Church Slavonic чрьнъ (inherited)
→ Lower Sorbian carny (inherited)
→ Upper Sorbian čorny (inherited)
→ Lithuanian kirsnas (cognate)
→ Macedonian црн (inherited)
→ Old East Slavic чьрнъ (inherited)
→ Polish czarny (inherited)
→ Polish Czorniej (mention)
→ Polish Czyrny (mention)
→ Polish Ciernioch (mention)
→ Old Prussian kirsnan (cognate)
→ Romanian cerni (derived)
→ Romanian Cerna (mention)
→ Romanian Cernavodă (borrowed)
→ Romanian Ciorogârla (derived)
→ Russian чёрный (inherited)
→ Russian чернота (affix)
→ Serbo-Croatian crn (inherited)
→ Serbo-Croatian црн (inherited)
→ Serbo-Croatian čarn (inherited)
→ Serbo-Croatian чарн (inherited)
→ Slovak čierny (inherited)
→ Ukrainian чорний (inherited)
→ Old Czech črný (inherited)