Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English regent
Middle English regent (inherited)
Middle French regent (derived)
Proto-Indo-European *h₃reǵ- (root)
Latin regēns (derived)
Latin regō (mention)

English king (link)
English rule (mention)
English rule (link)
English viceregent (affix)
English regency (affix)
English coregent (prefix)
English regentship (suffix)
English prince regent (compound)
English nonregent (prefix)
English regentess (suffix)
English interregent (prefix)
English regental (suffix)
German Regent (borrowed)
German Regent (derived)
Dutch regent (link)