Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Portuguese pregar
Proto-Indo-European *pleḱ- (derived)
Latin praedicāre (inherited(pt/gl))
Latin plicō (borrowed)
Latin praedicāre (inherited)
Latin praedicō (mention)
Latin prae (mention)
Latin dicō (mention)
Portuguese chegar (doublet)
Old Portuguese pregar (inherited)
Old Portuguese preegar (inherited)

Portuguese chegar (doublet)
Portuguese prego (back-formation)
Portuguese despregar (affix)