Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *h₂ergʰ-

English archaic (derived)
English matriarch (derived)
English -arch (derived)
English archi- (derived)
English archetype (derived)
English archaism (derived)
English archaeophyte (root)
Ancient Greek ἄρχω (derived)
Ancient Greek ὄρχαμος (derived)