Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
círculo
←
Latin
circulus
(borrowed)
←
Portuguese
cercho
(doublet)
→
Portuguese
circular
(affix)
→
Portuguese
semicírculo
(affix)