Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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French pétrole
Latin petroleum (mention)
Latin petra (mention)
Latin oleum (mention)

Bulgarian петрол (borrowed)
French pétrolier (suffix)
French pétrolifère (suffix)
French pétrolette (suffix)
Romanian petrol (borrowed)
Turkish petrol (borrowed)