Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
signe
←
Catalan
seny
(doublet)
←
Latin
signum
(borrowed)
→
Catalan
seny
(doublet)
→
Catalan
senya
(doublet)