Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
átrio
←
Latin
ātrium
(derived)
←
Portuguese
adro
(doublet)
→
Portuguese
atrial
(affix)
→
Portuguese
adro
(mention)