Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
grato
←
Latin
grātus
(borrowed)
←
Portuguese
grado
(doublet)
→
Portuguese
grado
(doublet)
→
Portuguese
gratidão
(affix)