Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
chavelha
←
Latin
clāvicula
(inherited)
←
Portuguese
clavícula
(doublet)
←
Old Portuguese
chavella
(inherited)
→
Spanish
clavija
(cognate)
→
Portuguese
cavilha
(doublet)
→
Portuguese
clavícula
(doublet)