Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Romanian pietros
Latin petrōsus (inherited)
Romanian piatră (suffix)
Romanian os (suffix)

Romanian Pietrosu (mention)
Romanian Pietroșița (affix)
Romanian Pietroșani (mention)
Romanian Chetrosu (mention)
Romanian Pietrosul Nou (mention)
Romanian Chetroasa (mention)
Romanian Crișul Pietros (mention)
Aromanian chitros (cognate)