Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Russian ве́чный

→ Belarusian вечны (cognate)
→ Russian век (link)
→ Russian вечно (affix)
→ Russian вечнозелёный (affix)
→ Russian извечный (affix)
→ Russian вековечный (affix)
→ Russian вечный огонь (affix)