Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Portuguese eco
← Ancient Greek ἠχώ (mention)
← Ancient Greek ἠχή (mention)
← Proto-Indo-European *sweh₂gʰ- (mention)
← Latin echo (mention)

→ Portuguese ecologia (confix)
→ Portuguese ecólogo (confix)
→ Portuguese ecoar (affix)
→ Portuguese ecozona (prefix)