Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
heretge
←
Catalan
herètic
(doublet)
←
Ancient Greek
αἱρετικός
(derived)
→
Catalan
heretgia
(suffix)
→
Catalan
herètic
(doublet)