Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
laic
←
Catalan
llec
(doublet)
←
Ancient Greek
λαός
(derived)
←
Latin
laicus
(learned borrowing)
→
Catalan
laïcitzar
(affix)
→
Catalan
llec
(doublet)