Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
clavícula
←
Latin
clavicula
(borrowed)
←
Latin
clāvis
(mention)
←
Portuguese
chavelha
(doublet)
←
Portuguese
cavilha
(doublet)
→
Portuguese
chavelha
(doublet)