Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Polish mrok
← Proto-Slavic *morkъ (inherited)

→ Belarusian мрок (borrowed)
→ Polish Mrok (mention)
→ Polish mroczek (suffix)
→ Polish mroczak (mention)
→ Polish mroczny (affix)
→ Polish półmrok (affix)
→ Polish mroczyć (suffix)