Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
área
←
Latin
ārea
(borrowed)
←
Portuguese
eira
(doublet)
→
Portuguese
areal
(suffix)
→
Portuguese
eira
(doublet)
→
Portuguese
eira
(link)