Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Polish rdzeń
Czech střeň (cognate)
Old Prussian strigeno (cognate)
Russian сте́ржень (cognate)
Proto-Slavic *strьžьnь (mention)
Old Polish zdrżeń (mention)

Polish rdzeniomózgowie (affix)
Polish rdzenny (affix)
Polish rdzeniowy (affix)